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Merge mysql.com:/home/gluh/MySQL/Merge/5.0-opt

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into  mysql.com:/home/gluh/MySQL/Merge/5.0
This commit is contained in:
gluh@mysql.com/eagle.(none) 2007-01-26 16:36:50 +04:00
commit 45f61a06fb
51 changed files with 2266 additions and 336 deletions
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8
mysql-test/r/delete.result
View File

@ -176,6 +176,14 @@ create table t1 (a int);
delete `4.t1` from t1 as `4.t1` where `4.t1`.a = 5;
delete FROM `4.t1` USING t1 as `4.t1` where `4.t1`.a = 5;
drop table t1;
create table t1(f1 int primary key);
insert into t1 values (4),(3),(1),(2);
delete from t1 where (@a:= f1) order by f1 limit 1;
select @a;
@a
1
drop table t1;
End of 4.1 tests
CREATE TABLE t1 (a int not null,b int not null);
CREATE TABLE t2 (a int not null, b int not null, primary key (a,b));
CREATE TABLE t3 (a int not null, b int not null, primary key (a,b));

23
mysql-test/r/fulltext_left_join.result
View File

@ -67,3 +67,26 @@ id d e m_id f
4 bword aword NULL NULL
5 aword and bword NULL 5
drop table t1,t2;
CREATE TABLE t1 (
id int(10) NOT NULL auto_increment,
link int(10) default NULL,
name mediumtext default NULL,
PRIMARY KEY (id),
FULLTEXT (name)
);
INSERT INTO t1 VALUES (1, 1, 'string');
INSERT INTO t1 VALUES (2, 0, 'string');
CREATE TABLE t2 (
id int(10) NOT NULL auto_increment,
name mediumtext default NULL,
PRIMARY KEY (id),
FULLTEXT (name)
);
INSERT INTO t2 VALUES (1, 'string');
SELECT t1.*, MATCH(t1.name) AGAINST('string') AS relevance
FROM t1 LEFT JOIN t2 ON t1.link = t2.id
WHERE MATCH(t1.name, t2.name) AGAINST('string' IN BOOLEAN MODE);
id link name relevance
1 1 string 0
2 0 string 0
DROP TABLE t1,t2;

43
mysql-test/r/func_in.result
View File

@ -355,4 +355,47 @@ some_id
1
2
drop table t1;
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a));
INSERT INTO t1 VALUES (1,1),(2,1),(3,1),(4,1),(5,1),(6,1);
CREATE TABLE t2 (a int, b int, PRIMARY KEY (a));
INSERT INTO t2 VALUES (3,2),(4,2);
CREATE TABLE t3 (a int PRIMARY KEY);
INSERT INTO t3 VALUES (1),(2),(3),(4);
CREATE TABLE t4 (a int PRIMARY KEY);
INSERT INTO t4 VALUES (1),(2);
EXPLAIN SELECT STRAIGHT_JOIN * FROM t3
JOIN t1 ON t3.a=t1.a
JOIN t2 ON t3.a=t2.a
JOIN t4 WHERE t4.a IN (t1.b, t2.b);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 index PRIMARY PRIMARY 4 NULL 4 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.a 1
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.a 1
1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1)
SELECT STRAIGHT_JOIN * FROM t3
JOIN t1 ON t3.a=t1.a
JOIN t2 ON t3.a=t2.a
JOIN t4 WHERE t4.a IN (t1.b, t2.b);
a a b a b a
3 3 1 3 2 1
3 3 1 3 2 2
4 4 1 4 2 1
4 4 1 4 2 2
EXPLAIN SELECT STRAIGHT_JOIN
(SELECT SUM(t4.a) FROM t4 WHERE t4.a IN (t1.b, t2.b))
FROM t3, t1, t2
WHERE t3.a=t1.a AND t3.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 index PRIMARY PRIMARY 4 NULL 4 Using index
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.a 1
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t3.a 1
2 DEPENDENT SUBQUERY t4 index NULL PRIMARY 4 NULL 2 Using where; Using index
SELECT STRAIGHT_JOIN
(SELECT SUM(t4.a) FROM t4 WHERE t4.a IN (t1.b, t2.b))
FROM t3, t1, t2
WHERE t3.a=t1.a AND t3.a=t2.a;
(SELECT SUM(t4.a) FROM t4 WHERE t4.a IN (t1.b, t2.b))
3
3
DROP TABLE t1,t2,t3,t4;
End of 5.0 tests

14
mysql-test/r/func_str.result
View File

@ -817,7 +817,7 @@ explain extended select md5('hello'), sha('abc'), sha1('abc'), soundex(''), 'moo
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,cast(_latin1'HE' as char charset binary) AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate latin1_bin),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n \r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substring_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000))) AS `decode(encode(repeat("a",100000),"monty"),"monty")`
Note 1003 select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,cast(_latin1'HE' as char charset binary) AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate latin1_bin),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n \r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substring_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000),'monty'),'monty') AS `decode(encode(repeat("a",100000),"monty"),"monty")`
SELECT lpad(12345, 5, "#");
lpad(12345, 5, "#")
12345
@ -1084,6 +1084,18 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1003 select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(both _latin1'y' from `test`.`t1`.`s`) > _latin1'ab')
DROP TABLE t1;
create table t1(f1 varchar(4));
explain extended select encode(f1,'zxcv') as 'enc' from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select encode(`test`.`t1`.`f1`,'zxcv') AS `enc` from `test`.`t1`
explain extended select decode(f1,'zxcv') as 'enc' from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select decode(`test`.`t1`.`f1`,'zxcv') AS `enc` from `test`.`t1`
drop table t1;
End of 4.1 tests
create table t1 (d decimal default null);
insert into t1 values (null);

102
mysql-test/r/group_by.result
View File

@ -933,3 +933,105 @@ b sum(1)
18 6
19 6
DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES (1,1),(2,1),(3,2),(4,2),(5,3),(6,3);
SET SQL_MODE = 'ONLY_FULL_GROUP_BY';
SELECT MAX(a)-MIN(a) FROM t1 GROUP BY b;
MAX(a)-MIN(a)
1
1
1
SELECT CEILING(MIN(a)) FROM t1 GROUP BY b;
CEILING(MIN(a))
1
3
5
SELECT CASE WHEN AVG(a)>=0 THEN 'Positive' ELSE 'Negative' END FROM t1
GROUP BY b;
CASE WHEN AVG(a)>=0 THEN 'Positive' ELSE 'Negative' END
Positive
Positive
Positive
SELECT a + 1 FROM t1 GROUP BY a;
a + 1
2
3
4
5
6
7
SELECT a + b FROM t1 GROUP BY b;
ERROR 42000: 'test.t1.a' isn't in GROUP BY
SELECT (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1)
FROM t1 AS t1_outer;
(SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1)
1
2
3
4
5
6
SELECT 1 FROM t1 as t1_outer GROUP BY a
HAVING (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1);
1
1
1
1
1
1
1
SELECT (SELECT t1_outer.a FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
ERROR 42000: 'test.t1_outer.a' isn't in GROUP BY
SELECT 1 FROM t1 as t1_outer GROUP BY a
HAVING (SELECT t1_outer.b FROM t1 AS t1_inner LIMIT 1);
ERROR 42S22: Unknown column 'test.t1_outer.b' in 'field list'
SELECT (SELECT SUM(t1_inner.a) FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
(SELECT SUM(t1_inner.a) FROM t1 AS t1_inner LIMIT 1)
21
21
21
SELECT (SELECT SUM(t1_inner.a) FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1)
FROM t1 AS t1_outer;
(SELECT SUM(t1_inner.a) FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1)
3
3
3
3
3
3
SELECT (SELECT SUM(t1_outer.a) FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
ERROR 42000: 'test.t1_outer.a' isn't in GROUP BY
SELECT 1 FROM t1 as t1_outer
WHERE (SELECT t1_outer.b FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1);
1
1
1
1
1
1
1
SELECT b FROM t1 GROUP BY b HAVING CEILING(b) > 0;
b
1
2
3
SELECT 1 FROM t1 GROUP BY b HAVING b = 2 OR b = 3 OR SUM(a) > 12;
1
1
1
SELECT 1 FROM t1 GROUP BY b HAVING ROW (b,b) = ROW (1,1);
1
1
SELECT 1 FROM t1 GROUP BY b HAVING a = 2;
ERROR 42S22: Unknown column 'a' in 'having clause'
SELECT 1 FROM t1 GROUP BY SUM(b);
ERROR HY000: Invalid use of group function
SELECT b FROM t1 AS t1_outer GROUP BY a HAVING t1_outer.a IN
(SELECT SUM(t1_inner.b)+t1_outer.b FROM t1 AS t1_inner GROUP BY t1_inner.a
HAVING SUM(t1_inner.b)+t1_outer.b > 5);
ERROR 42000: 'test.t1_outer.b' isn't in GROUP BY
DROP TABLE t1;
SET SQL_MODE = '';

21
mysql-test/r/insert.result
View File

@ -325,3 +325,24 @@ select row_count();
row_count()
1
drop table t1;
create table t1 (f1 int unique, f2 int);
create table t2 (f3 int, f4 int);
create view v1 as select * from t1, t2 where f1= f3;
insert into t1 values (1,11), (2,22);
insert into t2 values (1,12), (2,24);
insert into v1 (f1) values (3) on duplicate key update f3= f3 + 10;
ERROR HY000: Can not modify more than one base table through a join view 'test.v1'
insert into v1 (f1) values (3) on duplicate key update f1= f3 + 10;
select * from t1;
f1 f2
1 11
2 22
3 NULL
insert into v1 (f1) values (3) on duplicate key update f1= f3 + 10;
select * from t1;
f1 f2
1 11
2 22
12 NULL
drop view v1;
drop table t1,t2;

6
mysql-test/r/ndb_subquery.result
View File

@ -9,7 +9,7 @@ insert into t2 values (1,1,1),(2,2,2),(3,3,3), (4,4,4), (5,5,5);
explain select * from t2 where p NOT IN (select p from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1
select * from t2 where p NOT IN (select p from t1) order by p;
p u o
4 4 4
@ -17,7 +17,7 @@ p u o
explain select * from t2 where p NOT IN (select u from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 unique_subquery u u 4 func 1 Using index
2 DEPENDENT SUBQUERY t1 unique_subquery u u 4 func 1
select * from t2 where p NOT IN (select u from t1) order by p;
p u o
4 4 4
@ -25,7 +25,7 @@ p u o
explain select * from t2 where p NOT IN (select o from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 index_subquery o o 4 func 1 Using index
2 DEPENDENT SUBQUERY t1 index_subquery o o 4 func 1
select * from t2 where p NOT IN (select o from t1) order by p;
p u o
4 4 4

43
mysql-test/r/range.result
View File

@ -674,6 +674,49 @@ select a from t1 where a > 'x';
a
xx
drop table t1;
CREATE TABLE t1 (
OXID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
OXPARENTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT 'oxrootid',
OXLEFT int NOT NULL DEFAULT '0',
OXRIGHT int NOT NULL DEFAULT '0',
OXROOTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
PRIMARY KEY (OXID),
KEY OXNID (OXID),
KEY OXLEFT (OXLEFT),
KEY OXRIGHT (OXRIGHT),
KEY OXROOTID (OXROOTID)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_german2_ci;
INSERT INTO t1 VALUES
('d8c4177d09f8b11f5.52725521','oxrootid',1,40,'d8c4177d09f8b11f5.52725521'),
('d8c4177d151affab2.81582770','d8c4177d09f8b11f5.52725521',2,3,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d206a333d2.74422679','d8c4177d09f8b11f5.52725521',4,5,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d225791924.30714720','d8c4177d09f8b11f5.52725521',6,7,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d2380fc201.39666693','d8c4177d09f8b11f5.52725521',8,9,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d24ccef970.14957924','d8c4177d09f8b11f5.52725521',10,11,
'd8c4177d09f8b11f5.52725521');
EXPLAIN
SELECT s.oxid FROM t1 v, t1 s
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE v ref OXLEFT,OXRIGHT,OXROOTID OXROOTID 34 const 5 Using where
1 SIMPLE s ALL OXLEFT NULL NULL NULL 5 Range checked for each record (index map: 0x4)
SELECT s.oxid FROM t1 v, t1 s
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
oxid
d8c4177d151affab2.81582770
d8c4177d206a333d2.74422679
d8c4177d225791924.30714720
d8c4177d2380fc201.39666693
d8c4177d24ccef970.14957924
DROP TABLE t1;
End of 4.1 tests
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,

8
mysql-test/r/select.result
View File

@ -3628,6 +3628,14 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range si,ai si 5 NULL 2 Using where
1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where
DROP TABLE t1,t2,t3;
CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int);
CREATE TABLE t2 ( f11 int PRIMARY KEY );
INSERT INTO t1 VALUES (1,1,1,0,0,0,0),(2,1,1,3,8,1,0),(3,1,1,4,12,1,0);
INSERT INTO t2 VALUES (62);
SELECT * FROM t1 LEFT JOIN t2 ON f11 = t1.checked_out GROUP BY f1 ORDER BY f2, f3, f4, f5 LIMIT 0, 1;
f1 f2 f3 f4 f5 f6 checked_out f11
1 1 1 0 0 0 0 NULL
DROP TABLE t1, t2;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a int);
INSERT into t1 values (1), (2), (3);

2
mysql-test/r/sp-code.result
View File

@ -187,7 +187,7 @@ Pos Instruction
32 set v_dig@4 (v_dig@4 + 1)
33 stmt 4 "update sudoku_work set dig = v_dig wh..."
34 set v_tcounter@6 (v_tcounter@6 + 1)
35 jump_if_not 37(37) not(`test`.`sudoku_digit_ok`(v_row@7,v_col@8,v_dig@4))
35 jump_if_not 37(37) (not(`test`.`sudoku_digit_ok`(v_row@7,v_col@8,v_dig@4)))
36 jump 15
37 set v_i@3 (v_i@3 + 1)
38 jump 15

69
mysql-test/r/subselect.result
View File

@ -744,7 +744,7 @@ id select_type table type possible_keys key key_len ref rows Extra
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
Warnings:
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 AS `1` having trigcond((<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1))) union select 3 AS `3` having trigcond((<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3)))))
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 AS `1` having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(1)) union select 3 AS `3` having (<cache>(`test`.`t2`.`id`) = <ref_null_helper>(3))))
SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3);
id
SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
@ -892,7 +892,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 Using index
2 DEPENDENT SUBQUERY t2 index_subquery a a 5 func 2 Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL))) AS `t1.a in (select t2.a from t2)` from `test`.`t1`
Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a checking NULL having <is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2)` from `test`.`t1`
CREATE TABLE t3 (a int(11) default '0');
INSERT INTO t3 VALUES (1),(2),(3);
SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1;
@ -907,7 +907,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 Using where; Using index
2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and trigcond(((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t2`.`a`)))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1`
Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1`
drop table t1,t2,t3;
create table t1 (a float);
select 10.5 IN (SELECT * from t1 LIMIT 1);
@ -1305,7 +1305,7 @@ a
explain extended select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY where (`test`.`t1`.`b` <> 30))))
select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);
@ -1462,27 +1462,27 @@ a3 1
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index; Full scan on NULL key
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL)))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1`
Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index; Full scan on NULL key
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1`
Note 1003 select `test`.`t1`.`s1` AS `s1`,<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index; Full scan on NULL key
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL)))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1`
Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index; Using where
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index; Using where; Full scan on NULL key
Warnings:
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < _latin1'a2'))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`
Note 1003 select `test`.`t1`.`s1` AS `s1`,(not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 checking NULL where (`test`.`t2`.`s1` < _latin1'a2') having trigcond(<is_not_null_test>(`test`.`t2`.`s1`))))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`
drop table t1,t2;
create table t2 (a int, b int);
create table t3 (a int);
@ -1737,14 +1737,14 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 12 Using where
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where not(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where (`test`.`t1`.`id` < 8)))))
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where (`test`.`t1`.`id` < 8))))))
explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY tt ALL NULL NULL NULL NULL 12 Using where
2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 1 Using where; Using index
Warnings:
Note 1276 Field or reference 'tt.id' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where not(exists(select `test`.`t1`.`id` AS `id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null)))
Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where (not(exists(select `test`.`t1`.`id` AS `id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and (`test`.`t1`.`id` = `test`.`tt`.`id`)) having (`test`.`t1`.`id` is not null))))
insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001');
create table t2 (id int not null, text varchar(20) not null default '', primary key (id));
insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10');
@ -2816,19 +2816,19 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one` AS `one`,`test`.`t2`.`two` AS `two` from `test`.`t2` where ((`test`.`t2`.`flag` = _latin1'0') and trigcond((((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`)) and ((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))))) having trigcond((<is_not_null_test>(`test`.`t2`.`one`) and <is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1`
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one` AS `one`,`test`.`t2`.`two` AS `two` from `test`.`t2` where ((`test`.`t2`.`flag` = _latin1'0') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)))) having (trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1`
explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 Using where
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one` AS `one`,`test`.`t2`.`two` AS `two` from `test`.`t2` where ((`test`.`t2`.`flag` = _latin1'N') and trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) and (<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`))))))
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one` AS `one`,`test`.`t2`.`two` AS `two` from `test`.`t2` where ((`test`.`t2`.`flag` = _latin1'N') and (<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) and (<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`))))
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 Using where; Using temporary; Using filesort
Warnings:
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one` AS `one`,`test`.`t2`.`two` AS `two` from `test`.`t2` where (`test`.`t2`.`flag` = _latin1'0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having trigcond((((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`)) and ((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`)) and <is_not_null_test>(`test`.`t2`.`one`) and <is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1`
Note 1003 select `test`.`t1`.`one` AS `one`,`test`.`t1`.`two` AS `two`,<in_optimizer>((`test`.`t1`.`one`,`test`.`t1`.`two`),<exists>(select `test`.`t2`.`one` AS `one`,`test`.`t2`.`two` AS `two` from `test`.`t2` where (`test`.`t2`.`flag` = _latin1'0') group by `test`.`t2`.`one`,`test`.`t2`.`two` having (trigcond(((<cache>(`test`.`t1`.`one`) = `test`.`t2`.`one`) or isnull(`test`.`t2`.`one`))) and trigcond(((<cache>(`test`.`t1`.`two`) = `test`.`t2`.`two`) or isnull(`test`.`t2`.`two`))) and trigcond(<is_not_null_test>(`test`.`t2`.`one`)) and trigcond(<is_not_null_test>(`test`.`t2`.`two`))))) AS `test` from `test`.`t1`
DROP TABLE t1,t2;
CREATE TABLE t1 (a char(5), b char(5));
INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa');
@ -3009,7 +3009,7 @@ INSERT INTO t2 VALUES (1),(2),(3);
EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 3
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index; Full scan on NULL key
SELECT a, a IN (SELECT a FROM t1) FROM t2;
a a IN (SELECT a FROM t1)
1 1
@ -3605,3 +3605,36 @@ FROM t1) t;
COUNT(*)
3000
DROP TABLE t1,t2;
CREATE TABLE t1 (id char(4) PRIMARY KEY, c int);
CREATE TABLE t2 (c int);
INSERT INTO t1 VALUES ('aa', 1);
INSERT INTO t2 VALUES (1);
SELECT * FROM t1
WHERE EXISTS (SELECT c FROM t2 WHERE c=1
UNION
SELECT c from t2 WHERE c=t1.c);
id c
aa 1
INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1);
SELECT * FROM t1
WHERE EXISTS (SELECT c FROM t2 WHERE c=1
UNION
SELECT c from t2 WHERE c=t1.c);
id c
aa 1
bb 2
cc 3
dd 1
INSERT INTO t2 VALUES (2);
CREATE TABLE t3 (c int);
INSERT INTO t3 VALUES (1);
SELECT * FROM t1
WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1
UNION
SELECT c from t2 WHERE c=t1.c);
id c
aa 1
bb 2
cc 3
dd 1
DROP TABLE t1,t2,t3;

10
mysql-test/r/subselect2.result
View File

@ -126,11 +126,11 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL DDOCTYPEID_IDX NULL NULL NULL 9 Using where
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1
1 PRIMARY t4 eq_ref PRIMARY PRIMARY 34 test.t2.DOCTYPEID 1
2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using index; Using where
3 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using index; Using where
4 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using index; Using where
5 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using index; Using where
6 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 func 1 Using index; Using where
2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where
3 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where
4 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where
5 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 34 func 1 Using where
6 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 func 1 Using where
drop table t1, t2, t3, t4;
CREATE TABLE t1 (a int(10) , PRIMARY KEY (a)) Engine=InnoDB;
INSERT INTO t1 VALUES (1),(2);

496
mysql-test/r/subselect3.result
View File

@ -15,9 +15,8 @@ insert into t2 values
(4, NULL),
(2, NULL);
select a, oref, a in (select max(ie)
from t1 where oref=t2.oref group by grp) from t2;
a oref a in (select max(ie)
from t1 where oref=t2.oref group by grp)
from t1 where oref=t2.oref group by grp) Z from t2;
a oref Z
1 1 1
2 2 0
3 3 NULL
@ -25,14 +24,13 @@ NULL 4 0
NULL 2 NULL
explain extended
select a, oref, a in (select max(ie)
from t1 where oref=t2.oref group by grp) from t2;
from t1 where oref=t2.oref group by grp) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 Using where; Using temporary; Using filesort
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) AS `max(ie)` from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) AS `a in (select max(ie)
from t1 where oref=t2.oref group by grp)` from `test`.`t2`
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) AS `max(ie)` from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) AS `Z` from `test`.`t2`
explain extended
select a, oref from t2
where a in (select max(ie) from t1 where oref=t2.oref group by grp);
@ -42,6 +40,16 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) AS `max(ie)` from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having (<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))
select a, oref, a in (
select max(ie) from t1 where oref=t2.oref group by grp union
select max(ie) from t1 where oref=t2.oref group by grp
) Z from t2;
a oref Z
1 1 1
2 2 0
3 3 NULL
NULL 4 0
NULL 2 NULL
create table t3 (a int);
insert into t3 values (NULL), (NULL);
flush status;
@ -81,10 +89,10 @@ explain extended
select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 4
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index; Using where
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using where; Full scan on NULL key
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where (`test`.`t1`.`oref` = `test`.`t2`.`oref`)))) AS `Z` from `test`.`t2`
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) having trigcond(<is_not_null_test>(`test`.`t1`.`a`))))) AS `Z` from `test`.`t2`
flush status;
select oref, a from t2 where a in (select a from t1 where oref=t2.oref);
oref a
@ -145,9 +153,479 @@ t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
from t3;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3
2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 4 Using where
2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 4 Using where; Full scan on NULL key
2 DEPENDENT SUBQUERY t2 ref a a 5 test.t1.b 1 Using where
Warnings:
Note 1276 Field or reference 't3.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond(((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t1`.`a`)))) AS `Z` from `test`.`t3`
drop table t1, t2, t3;
create table t1 (a int NOT NULL, b int NOT NULL, key(a));
insert into t1 values
(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
create table t2 like t1;
insert into t2 select * from t1;
update t2 set b=1;
create table t3 (a int, oref int);
insert into t3 values (1, 1), (NULL,1), (NULL,0);
select a, oref,
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
from t3;
a oref Z
1 1 1
NULL 1 NULL
NULL 0 0
This must show a trig_cond:
explain extended
select a, oref,
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
from t3;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3
2 DEPENDENT SUBQUERY t1 ref a a 4 func 2 Using where; Full scan on NULL key
2 DEPENDENT SUBQUERY t2 ref a a 4 test.t1.b 1 Using where
Warnings:
Note 1276 Field or reference 't3.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`))))) AS `Z` from `test`.`t3`
drop table t1,t2,t3;
create table t1 (oref int, grp int);
insert into t1 (oref, grp) values
(1, 1),
(1, 1);
create table t2 (oref int, a int);
insert into t2 values
(1, NULL),
(2, NULL);
select a, oref,
a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
a oref Z
NULL 1 NULL
NULL 2 0
This must show a trig_cond:
explain extended
select a, oref,
a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select count(0) AS `count(*)` from `test`.`t1` group by `test`.`t1`.`grp` having ((`test`.`t1`.`grp` = `test`.`t2`.`oref`) and trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(count(0))))))) AS `Z` from `test`.`t2`
drop table t1, t2;
create table t1 (a int, b int, primary key (a));
insert into t1 values (1,1), (3,1),(100,1);
create table t2 (a int, b int);
insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
select a,b, a in (select a from t1 where t1.b = t2.b union select a from
t1 where t1.b = t2.b) Z from t2 ;
a b Z
1 1 1
2 1 0
NULL 1 NULL
NULL 0 0
select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
a b Z
1 1 1
2 1 0
NULL 1 NULL
NULL 0 0
drop table t1, t2;
create table t3 (a int);
insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, b int, oref int);
insert into t2 values (NULL,1, 100), (NULL,2, 100);
create table t1 (a int, b int, c int, key(a,b));
insert into t1 select 2*A, 2*A, 100 from t3;
explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using where; Full scan on NULL key
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`)))))) AS `Z` from `test`.`t2`
select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
a b oref Z
NULL 1 100 0
NULL 2 100 NULL
create table t4 (x int);
insert into t4 select A.a + 10*B.a from t1 A, t1 B;
explain extended
select a,b, oref,
(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 2 Using where; Full scan on NULL key
2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 100 Using where
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` join `test`.`t4` where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`))))) AS `Z` from `test`.`t2`
select a,b, oref,
(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
from t2;
a b oref Z
NULL 1 100 0
NULL 2 100 NULL
drop table t1,t2,t3,t4;
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
insert into t1 (oref, grp, ie1, ie2) values
('aa', 10, 2, 1),
('aa', 10, 1, 1),
('aa', 20, 2, 1),
('bb', 10, 3, 1),
('cc', 10, 4, 2),
('cc', 20, 3, 2),
('ee', 10, 2, 1),
('ee', 10, 1, 2),
('ff', 20, 2, 2),
('ff', 20, 1, 2);
create table t2 (oref char(4), a int, b int);
insert into t2 values
('ee', NULL, 1),
('bb', 2, 1),
('ff', 2, 2),
('cc', 3, NULL),
('bb', NULL, NULL),
('aa', 1, 1),
('dd', 1, NULL);
alter table t1 add index idx(ie1,ie2);
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ;
oref a b Z
cc 3 NULL NULL
insert into t2 values ('new1', 10,10);
insert into t1 values ('new1', 1234, 10, NULL);
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
oref a b Z
new1 10 10 NULL
explain extended
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 8 Using where
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2` where ((`test`.`t2`.`b` = 10) and (`test`.`t2`.`a` = 10))
drop table t1, t2;
create table t1 (oref char(4), grp int, ie int);
insert into t1 (oref, grp, ie) values
('aa', 10, 2),
('aa', 10, 1),
('aa', 20, NULL),
('bb', 10, 3),
('cc', 10, 4),
('cc', 20, NULL),
('ee', 10, NULL),
('ee', 10, NULL),
('ff', 20, 2),
('ff', 20, 1);
create table t2 (oref char(4), a int);
insert into t2 values
('ee', NULL),
('bb', 2),
('ff', 2),
('cc', 3),
('aa', 1),
('dd', NULL),
('bb', NULL);
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref a Z
ee NULL NULL
bb 2 0
ff 2 1
cc 3 NULL
aa 1 1
dd NULL 0
bb NULL NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref a
ff 2
aa 1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref a
bb 2
dd NULL
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
oref a Z
ee NULL NULL
bb 2 0
ff 2 0
cc 3 NULL
aa 1 1
dd NULL 0
bb NULL NULL
select oref, a from t2 where
a in (select min(ie) from t1 where oref=t2.oref group by grp);
oref a
aa 1
select oref, a from t2 where
a not in (select min(ie) from t1 where oref=t2.oref group by grp);
oref a
bb 2
ff 2
dd NULL
update t1 set ie=3 where oref='ff' and ie=1;
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
grp) Z from t2;
oref a Z
ee NULL NULL
bb 2 0
ff 2 1
cc 3 NULL
aa 1 1
dd NULL 0
bb NULL NULL
select oref, a from t2 where a in (select min(ie) from t1 where
oref=t2.oref group by grp);
oref a
ff 2
aa 1
select oref, a from t2 where a not in (select min(ie) from t1 where
oref=t2.oref group by grp);
oref a
bb 2
dd NULL
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
grp having min(ie) > 1) Z from t2;
oref a Z
ee NULL 0
bb 2 0
ff 2 1
cc 3 0
aa 1 0
dd NULL 0
bb NULL NULL
select oref, a from t2 where a in (select min(ie) from t1 where
oref=t2.oref group by grp having min(ie) > 1);
oref a
ff 2
select oref, a from t2 where a not in (select min(ie) from t1 where
oref=t2.oref group by grp having min(ie) > 1);
oref a
ee NULL
bb 2
cc 3
aa 1
dd NULL
alter table t1 add index idx(ie);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref a Z
ee NULL NULL
bb 2 0
ff 2 1
cc 3 NULL
aa 1 1
dd NULL 0
bb NULL NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref a
ff 2
aa 1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref a
bb 2
dd NULL
alter table t1 drop index idx;
alter table t1 add index idx(oref,ie);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 ref_or_null idx idx 10 test.t2.oref,func 4 Using where; Using index; Full scan on NULL key
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref a Z
ee NULL NULL
bb 2 0
ff 2 1
cc 3 NULL
aa 1 1
dd NULL 0
bb NULL NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref a
ff 2
aa 1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref a
bb 2
dd NULL
explain
select oref, a,
a in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1) Z
from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 ref idx idx 5 test.t2.oref 2 Using where; Using temporary; Using filesort
select oref, a,
a in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1) Z
from t2;
oref a Z
ee NULL 0
bb 2 0
ff 2 1
cc 3 0
aa 1 0
dd NULL 0
bb NULL NULL
select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1);
oref a
ff 2
select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1);
oref a
ee NULL
bb 2
cc 3
aa 1
dd NULL
drop table t1,t2;
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
insert into t1 (oref, grp, ie1, ie2) values
('aa', 10, 2, 1),
('aa', 10, 1, 1),
('aa', 20, 2, 1),
('bb', 10, 3, 1),
('cc', 10, 4, 2),
('cc', 20, 3, 2),
('ee', 10, 2, 1),
('ee', 10, 1, 2),
('ff', 20, 2, 2),
('ff', 20, 1, 2);
create table t2 (oref char(4), a int, b int);
insert into t2 values
('ee', NULL, 1),
('bb', 2, 1),
('ff', 2, 2),
('cc', 3, NULL),
('bb', NULL, NULL),
('aa', 1, 1),
('dd', 1, NULL);
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
oref a b Z
ee NULL 1 NULL
bb 2 1 0
ff 2 2 1
cc 3 NULL NULL
bb NULL NULL NULL
aa 1 1 1
dd 1 NULL 0
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
oref a b
ff 2 2
aa 1 1
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
oref a b
bb 2 1
dd 1 NULL
select oref, a, b,
(a,b) in (select min(ie1),max(ie2) from t1
where oref=t2.oref group by grp) Z
from t2;
oref a b Z
ee NULL 1 0
bb 2 1 0
ff 2 2 0
cc 3 NULL NULL
bb NULL NULL NULL
aa 1 1 1
dd 1 NULL 0
select oref, a, b from t2 where
(a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
oref a b
aa 1 1
select oref, a, b from t2 where
(a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
oref a b
ee NULL 1
bb 2 1
ff 2 2
dd 1 NULL
alter table t1 add index idx(ie1,ie2);
explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
oref a b Z
ee NULL 1 NULL
bb 2 1 0
ff 2 2 1
cc 3 NULL NULL
bb NULL NULL NULL
aa 1 1 1
dd 1 NULL 0
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
oref a b
ff 2 2
aa 1 1
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
oref a b
bb 2 1
dd 1 NULL
explain extended
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key
Warnings:
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2`
drop table t1,t2;
create table t1 (oref char(4), grp int, ie int primary key);
insert into t1 (oref, grp, ie) values
('aa', 10, 2),
('aa', 10, 1),
('bb', 10, 3),
('cc', 10, 4),
('cc', 20, 5),
('cc', 10, 6);
create table t2 (oref char(4), a int);
insert into t2 values
('ee', NULL),
('bb', 2),
('cc', 5),
('cc', 2),
('cc', NULL),
('aa', 1),
('bb', NULL);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using where; Full scan on NULL key
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
oref a Z
ee NULL 0
bb 2 0
cc 5 1
cc 2 0
cc NULL NULL
aa 1 1
bb NULL NULL
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
oref a
cc 5
aa 1
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
oref a
ee NULL
bb 2
cc 2
explain
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 Using where; Using temporary; Using filesort
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
oref a Z
ee NULL 0
bb 2 0
cc 5 1
cc 2 0
cc NULL NULL
aa 1 1
bb NULL NULL
drop table t1,t2;

32
mysql-test/r/trigger.result
View File

@ -1278,4 +1278,36 @@ a b
2 b
3 c
drop table t1;
CREATE TABLE t1 (
id int NOT NULL DEFAULT '0',
a varchar(10) NOT NULL,
b varchar(10),
c varchar(10),
d timestamp NOT NULL,
PRIMARY KEY (id, a)
);
CREATE TABLE t2 (
fubar_id int unsigned NOT NULL DEFAULT '0',
last_change_time datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
PRIMARY KEY (fubar_id)
);
CREATE TRIGGER fubar_change
AFTER UPDATE ON t1
FOR EACH ROW
BEGIN
INSERT INTO t2 (fubar_id, last_change_time)
SELECT DISTINCT NEW.id AS fubar_id, NOW() AS last_change_time
FROM t1 WHERE (id = NEW.id) AND (OLD.c != NEW.c)
ON DUPLICATE KEY UPDATE
last_change_time =
IF((fubar_id = NEW.id)AND(OLD.c != NEW.c),NOW(),last_change_time);
END
|
INSERT INTO t1 (id,a, b,c,d) VALUES
(1,'a','b','c',now()),(2,'a','b','c',now());
UPDATE t1 SET c='Bang!' WHERE id=1;
SELECT fubar_id FROM t2;
fubar_id
1
DROP TABLE t1,t2;
End of 5.0 tests

34
mysql-test/r/udf.result
View File

@ -240,3 +240,37 @@ drop table bug18761;
select is_const((1,2,3));
ERROR 21000: Operand should contain 1 column(s)
drop function if exists is_const;
CREATE FUNCTION metaphon RETURNS STRING SONAME "UDF_EXAMPLE_LIB";
CREATE FUNCTION myfunc_double RETURNS REAL SONAME "UDF_EXAMPLE_LIB";
CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "UDF_EXAMPLE_LIB";
create function f1(p1 varchar(255))
returns varchar(255)
begin
return metaphon(p1);
end//
create function f2(p1 varchar(255))
returns double
begin
return myfunc_double(p1);
end//
create function f3(p1 varchar(255))
returns double
begin
return myfunc_int(p1);
end//
select f3(NULL);
f3(NULL)
0
select f2(NULL);
f2(NULL)
NULL
select f1(NULL);
f1(NULL)
NULL
drop function f1;
drop function f2;
drop function f3;
drop function metaphon;
drop function myfunc_double;
drop function myfunc_int;
End of 5.0 tests.

11
mysql-test/r/view.result
View File

@ -3014,6 +3014,17 @@ i j
6 3
DROP VIEW v1, v2;
DROP TABLE t1;
CREATE VIEW v AS SELECT !0 * 5 AS x FROM DUAL;
SHOW CREATE VIEW v;
View Create View
v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select ((not(0)) * 5) AS `x`
SELECT !0 * 5 AS x FROM DUAL;
x
5
SELECT * FROM v;
x
5
DROP VIEW v;
DROP VIEW IF EXISTS v1;
CREATE VIEW v1 AS SELECT 'The\ZEnd';
SELECT * FROM v1;

11
mysql-test/t/delete.test
View File

@ -163,6 +163,17 @@ delete `4.t1` from t1 as `4.t1` where `4.t1`.a = 5;
delete FROM `4.t1` USING t1 as `4.t1` where `4.t1`.a = 5;
drop table t1;
#
# Bug#17711: DELETE doesn't use index when ORDER BY, LIMIT and
# non-restricting WHERE is present.
#
create table t1(f1 int primary key);
insert into t1 values (4),(3),(1),(2);
delete from t1 where (@a:= f1) order by f1 limit 1;
select @a;
drop table t1;
--echo End of 4.1 tests
# End of 4.1 tests
#

28
mysql-test/t/fulltext_left_join.test
View File

@ -58,4 +58,32 @@ insert into t2 values (1, 'bword'), (3, 'aword'), (5, '');
select * from t1 left join t2 on m_id = id where match(d, e, f) against ('+aword +bword' in boolean mode);
drop table t1,t2;
#
# BUG#25637: LEFT JOIN with BOOLEAN FULLTEXT loses left table matches
# (this is actually the same bug as bug #14708)
#
CREATE TABLE t1 (
id int(10) NOT NULL auto_increment,
link int(10) default NULL,
name mediumtext default NULL,
PRIMARY KEY (id),
FULLTEXT (name)
);
INSERT INTO t1 VALUES (1, 1, 'string');
INSERT INTO t1 VALUES (2, 0, 'string');
CREATE TABLE t2 (
id int(10) NOT NULL auto_increment,
name mediumtext default NULL,
PRIMARY KEY (id),
FULLTEXT (name)
);
INSERT INTO t2 VALUES (1, 'string');
SELECT t1.*, MATCH(t1.name) AGAINST('string') AS relevance
FROM t1 LEFT JOIN t2 ON t1.link = t2.id
WHERE MATCH(t1.name, t2.name) AGAINST('string' IN BOOLEAN MODE);
DROP TABLE t1,t2;
# End of 4.1 tests

36
mysql-test/t/func_in.test
View File

@ -261,5 +261,41 @@ select some_id from t1 where some_id not in('-1', '0');
drop table t1;
#
# BUG#20420: optimizer reports wrong keys on left join with IN
#
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a));
INSERT INTO t1 VALUES (1,1),(2,1),(3,1),(4,1),(5,1),(6,1);
CREATE TABLE t2 (a int, b int, PRIMARY KEY (a));
INSERT INTO t2 VALUES (3,2),(4,2);
CREATE TABLE t3 (a int PRIMARY KEY);
INSERT INTO t3 VALUES (1),(2),(3),(4);
CREATE TABLE t4 (a int PRIMARY KEY);
INSERT INTO t4 VALUES (1),(2);
EXPLAIN SELECT STRAIGHT_JOIN * FROM t3
JOIN t1 ON t3.a=t1.a
JOIN t2 ON t3.a=t2.a
JOIN t4 WHERE t4.a IN (t1.b, t2.b);
SELECT STRAIGHT_JOIN * FROM t3
JOIN t1 ON t3.a=t1.a
JOIN t2 ON t3.a=t2.a
JOIN t4 WHERE t4.a IN (t1.b, t2.b);
EXPLAIN SELECT STRAIGHT_JOIN
(SELECT SUM(t4.a) FROM t4 WHERE t4.a IN (t1.b, t2.b))
FROM t3, t1, t2
WHERE t3.a=t1.a AND t3.a=t2.a;
SELECT STRAIGHT_JOIN
(SELECT SUM(t4.a) FROM t4 WHERE t4.a IN (t1.b, t2.b))
FROM t3, t1, t2
WHERE t3.a=t1.a AND t3.a=t2.a;
DROP TABLE t1,t2,t3,t4;
--echo End of 5.0 tests

8
mysql-test/t/func_str.test
View File

@ -730,6 +730,14 @@ EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(BOTH 'y' FROM s) > 'ab';
DROP TABLE t1;
#
# Bug#23409: ENCODE() and DECODE() functions aren't printed correctly
#
create table t1(f1 varchar(4));
explain extended select encode(f1,'zxcv') as 'enc' from t1;
explain extended select decode(f1,'zxcv') as 'enc' from t1;
drop table t1;
--echo End of 4.1 tests
#

51
mysql-test/t/group_by.test
View File

@ -701,3 +701,54 @@ EXPLAIN SELECT SQL_BIG_RESULT b, sum(1) FROM t1 GROUP BY b;
SELECT b, sum(1) FROM t1 GROUP BY b;
SELECT SQL_BIG_RESULT b, sum(1) FROM t1 GROUP BY b;
DROP TABLE t1;
#
# Bug #23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode
#
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES (1,1),(2,1),(3,2),(4,2),(5,3),(6,3);
SET SQL_MODE = 'ONLY_FULL_GROUP_BY';
SELECT MAX(a)-MIN(a) FROM t1 GROUP BY b;
SELECT CEILING(MIN(a)) FROM t1 GROUP BY b;
SELECT CASE WHEN AVG(a)>=0 THEN 'Positive' ELSE 'Negative' END FROM t1
GROUP BY b;
SELECT a + 1 FROM t1 GROUP BY a;
--error ER_WRONG_FIELD_WITH_GROUP
SELECT a + b FROM t1 GROUP BY b;
SELECT (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1)
FROM t1 AS t1_outer;
SELECT 1 FROM t1 as t1_outer GROUP BY a
HAVING (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1);
--error ER_WRONG_FIELD_WITH_GROUP
SELECT (SELECT t1_outer.a FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
--error ER_BAD_FIELD_ERROR
SELECT 1 FROM t1 as t1_outer GROUP BY a
HAVING (SELECT t1_outer.b FROM t1 AS t1_inner LIMIT 1);
SELECT (SELECT SUM(t1_inner.a) FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
SELECT (SELECT SUM(t1_inner.a) FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1)
FROM t1 AS t1_outer;
--error ER_WRONG_FIELD_WITH_GROUP
SELECT (SELECT SUM(t1_outer.a) FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
SELECT 1 FROM t1 as t1_outer
WHERE (SELECT t1_outer.b FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1);
SELECT b FROM t1 GROUP BY b HAVING CEILING(b) > 0;
SELECT 1 FROM t1 GROUP BY b HAVING b = 2 OR b = 3 OR SUM(a) > 12;
SELECT 1 FROM t1 GROUP BY b HAVING ROW (b,b) = ROW (1,1);
--error ER_BAD_FIELD_ERROR
SELECT 1 FROM t1 GROUP BY b HAVING a = 2;
--error ER_INVALID_GROUP_FUNC_USE
SELECT 1 FROM t1 GROUP BY SUM(b);
--error ER_WRONG_FIELD_WITH_GROUP
SELECT b FROM t1 AS t1_outer GROUP BY a HAVING t1_outer.a IN
(SELECT SUM(t1_inner.b)+t1_outer.b FROM t1 AS t1_inner GROUP BY t1_inner.a
HAVING SUM(t1_inner.b)+t1_outer.b > 5);
DROP TABLE t1;
SET SQL_MODE = '';

18
mysql-test/t/insert.test
View File

@ -198,3 +198,21 @@ select row_count();
insert into t1 values (5, 5) on duplicate key update data= data + 10;
select row_count();
drop table t1;
#
# Bug#25123: ON DUPLICATE KEY clause allows fields not from the insert table
#
create table t1 (f1 int unique, f2 int);
create table t2 (f3 int, f4 int);
create view v1 as select * from t1, t2 where f1= f3;
insert into t1 values (1,11), (2,22);
insert into t2 values (1,12), (2,24);
--error 1393
insert into v1 (f1) values (3) on duplicate key update f3= f3 + 10;
insert into v1 (f1) values (3) on duplicate key update f1= f3 + 10;
select * from t1;
insert into v1 (f1) values (3) on duplicate key update f1= f3 + 10;
select * from t1;
drop view v1;
drop table t1,t2;

43
mysql-test/t/range.test
View File

@ -525,6 +525,49 @@ explain select a from t1 where a > 'x';
select a from t1 where a > 'x';
drop table t1;
#
# Bug #24776: assertion abort for 'range checked for each record'
#
CREATE TABLE t1 (
OXID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
OXPARENTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT 'oxrootid',
OXLEFT int NOT NULL DEFAULT '0',
OXRIGHT int NOT NULL DEFAULT '0',
OXROOTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
PRIMARY KEY (OXID),
KEY OXNID (OXID),
KEY OXLEFT (OXLEFT),
KEY OXRIGHT (OXRIGHT),
KEY OXROOTID (OXROOTID)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_german2_ci;
INSERT INTO t1 VALUES
('d8c4177d09f8b11f5.52725521','oxrootid',1,40,'d8c4177d09f8b11f5.52725521'),
('d8c4177d151affab2.81582770','d8c4177d09f8b11f5.52725521',2,3,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d206a333d2.74422679','d8c4177d09f8b11f5.52725521',4,5,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d225791924.30714720','d8c4177d09f8b11f5.52725521',6,7,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d2380fc201.39666693','d8c4177d09f8b11f5.52725521',8,9,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d24ccef970.14957924','d8c4177d09f8b11f5.52725521',10,11,
'd8c4177d09f8b11f5.52725521');
EXPLAIN
SELECT s.oxid FROM t1 v, t1 s
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
SELECT s.oxid FROM t1 v, t1 s
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
DROP TABLE t1;
--echo End of 4.1 tests
#

10
mysql-test/t/select.test
View File

@ -3103,6 +3103,16 @@ SELECT t3.a FROM t1,t2,t3
t3.c IN ('bb','ee');
DROP TABLE t1,t2,t3;
#
# Bug#25172: Not checked buffer size leads to a server crash
#
CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int);
CREATE TABLE t2 ( f11 int PRIMARY KEY );
INSERT INTO t1 VALUES (1,1,1,0,0,0,0),(2,1,1,3,8,1,0),(3,1,1,4,12,1,0);
INSERT INTO t2 VALUES (62);
SELECT * FROM t1 LEFT JOIN t2 ON f11 = t1.checked_out GROUP BY f1 ORDER BY f2, f3, f4, f5 LIMIT 0, 1;
DROP TABLE t1, t2;
#
# Bug#6298: LIMIT #, -1 no longer works to set start with no end limit

34
mysql-test/t/subselect.test
View File

@ -2508,3 +2508,37 @@ SELECT SQL_NO_CACHE COUNT(*)
FROM t1) t;
DROP TABLE t1,t2;
#
# Bug #25219: EXIST subquery with UNION over a mix of
# correlated and uncorrelated selects
#
CREATE TABLE t1 (id char(4) PRIMARY KEY, c int);
CREATE TABLE t2 (c int);
INSERT INTO t1 VALUES ('aa', 1);
INSERT INTO t2 VALUES (1);
SELECT * FROM t1
WHERE EXISTS (SELECT c FROM t2 WHERE c=1
UNION
SELECT c from t2 WHERE c=t1.c);
INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1);
SELECT * FROM t1
WHERE EXISTS (SELECT c FROM t2 WHERE c=1
UNION
SELECT c from t2 WHERE c=t1.c);
INSERT INTO t2 VALUES (2);
CREATE TABLE t3 (c int);
INSERT INTO t3 VALUES (1);
SELECT * FROM t1
WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1
UNION
SELECT c from t2 WHERE c=t1.c);
DROP TABLE t1,t2,t3;

353
mysql-test/t/subselect3.test
View File

@ -16,13 +16,14 @@ insert into t1 (oref, grp, ie) values
(3, 1, 4),
(3, 2, NULL);
# Ok, for
# Ok, for
# select max(ie) from t1 where oref=PARAM group by grp
# we'll have:
# 1 -> (1, NULL) matching + NULL
# 2 -> (3) non-matching
# 3 -> (3, NULL) non-matching + NULL
# 4 -> () nothing.
# PARAM subquery result
# 1 -> {(1), (NULL)} matching + NULL
# 2 -> {(3)} non-matching
# 3 -> {(3), (NULL)} non-matching + NULL
# 4 -> {} empty set
create table t2 (oref int, a int);
insert into t2 values
@ -34,18 +35,21 @@ insert into t2 values
# true, false, null, false, null
select a, oref, a in (select max(ie)
from t1 where oref=t2.oref group by grp) from t2;
from t1 where oref=t2.oref group by grp) Z from t2;
# This must have a trigcond
explain extended
select a, oref, a in (select max(ie)
from t1 where oref=t2.oref group by grp) from t2;
from t1 where oref=t2.oref group by grp) Z from t2;
# This must not have a trigcond:
explain extended
select a, oref from t2
where a in (select max(ie) from t1 where oref=t2.oref group by grp);
select a, oref, a in (
select max(ie) from t1 where oref=t2.oref group by grp union
select max(ie) from t1 where oref=t2.oref group by grp
) Z from t2;
# Non-correlated subquery, 2 NULL evaluations
create table t3 (a int);
@ -135,3 +139,336 @@ from t3;
drop table t1, t2, t3;
#
# BUG#24085: Wrong query result for "NULL IN (SELECT ... UNION SELECT ...)"
#
# case 1: NULL IN (SELECT not_null_val FROM ...) w/o HAVING/GROUP-BY/etc
create table t1 (a int NOT NULL, b int NOT NULL, key(a));
insert into t1 values
(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
create table t2 like t1;
insert into t2 select * from t1;
update t2 set b=1;
create table t3 (a int, oref int);
insert into t3 values (1, 1), (NULL,1), (NULL,0);
select a, oref,
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
from t3;
--echo This must show a trig_cond:
explain extended
select a, oref,
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
from t3;
drop table t1,t2,t3;
# case 2: NULL IN (SELECT not_null_val FROM) where SELECT has GROUP BY
create table t1 (oref int, grp int);
insert into t1 (oref, grp) values
(1, 1),
(1, 1);
# Ok, for
# select count(*) from t1 group by grp having grp=PARAM
# we'll have:
# PARAM subuqery result
# 1 -> {(2)}
# 2 -> {} - empty set
create table t2 (oref int, a int);
insert into t2 values
(1, NULL),
(2, NULL);
select a, oref,
a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
--echo This must show a trig_cond:
explain extended
select a, oref,
a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
drop table t1, t2;
create table t1 (a int, b int, primary key (a));
insert into t1 values (1,1), (3,1),(100,1);
create table t2 (a int, b int);
insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
select a,b, a in (select a from t1 where t1.b = t2.b union select a from
t1 where t1.b = t2.b) Z from t2 ;
select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
drop table t1, t2;
#
# BUG#24127: Incorrect results of row-based subqueries with NULLs on the left side.
#
create table t3 (a int);
insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, b int, oref int);
insert into t2 values (NULL,1, 100), (NULL,2, 100);
create table t1 (a int, b int, c int, key(a,b));
insert into t1 select 2*A, 2*A, 100 from t3;
# First test index subquery engine
explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
# Then check that we do turn off 'ref' scans in the subquery
create table t4 (x int);
insert into t4 select A.a + 10*B.a from t1 A, t1 B;
explain extended
select a,b, oref,
(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
from t2;
select a,b, oref,
(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
from t2;
drop table t1,t2,t3,t4;
# More tests for tricky multi-column cases, where some of pushed-down
# equalities are used for index lookups and some arent.
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
insert into t1 (oref, grp, ie1, ie2) values
('aa', 10, 2, 1),
('aa', 10, 1, 1),
('aa', 20, 2, 1),
('bb', 10, 3, 1),
('cc', 10, 4, 2),
('cc', 20, 3, 2),
('ee', 10, 2, 1),
('ee', 10, 1, 2),
('ff', 20, 2, 2),
('ff', 20, 1, 2);
create table t2 (oref char(4), a int, b int);
insert into t2 values
('ee', NULL, 1),
('bb', 2, 1),
('ff', 2, 2),
('cc', 3, NULL),
('bb', NULL, NULL),
('aa', 1, 1),
('dd', 1, NULL);
alter table t1 add index idx(ie1,ie2);
--cc 3 NULL NULL
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ;
insert into t2 values ('new1', 10,10);
insert into t1 values ('new1', 1234, 10, NULL);
-- new1, 10, 10, NULL,
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
explain extended
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
drop table t1, t2;
# Now test different column types:
create table t1 (oref char(4), grp int, ie int);
insert into t1 (oref, grp, ie) values
('aa', 10, 2),
('aa', 10, 1),
('aa', 20, NULL),
('bb', 10, 3),
('cc', 10, 4),
('cc', 20, NULL),
('ee', 10, NULL),
('ee', 10, NULL),
('ff', 20, 2),
('ff', 20, 1);
create table t2 (oref char(4), a int);
insert into t2 values
('ee', NULL),
('bb', 2),
('ff', 2),
('cc', 3),
('aa', 1),
('dd', NULL),
('bb', NULL);
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
select oref, a from t2 where
a in (select min(ie) from t1 where oref=t2.oref group by grp);
select oref, a from t2 where
a not in (select min(ie) from t1 where oref=t2.oref group by grp);
#
update t1 set ie=3 where oref='ff' and ie=1;
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
grp) Z from t2;
select oref, a from t2 where a in (select min(ie) from t1 where
oref=t2.oref group by grp);
select oref, a from t2 where a not in (select min(ie) from t1 where
oref=t2.oref group by grp);
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
grp having min(ie) > 1) Z from t2;
select oref, a from t2 where a in (select min(ie) from t1 where
oref=t2.oref group by grp having min(ie) > 1);
select oref, a from t2 where a not in (select min(ie) from t1 where
oref=t2.oref group by grp having min(ie) > 1);
#
alter table t1 add index idx(ie);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
alter table t1 drop index idx;
alter table t1 add index idx(oref,ie);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
explain
select oref, a,
a in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1) Z
from t2;
select oref, a,
a in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1) Z
from t2;
select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1);
select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref
group by grp having min(ie) > 1);
drop table t1,t2;
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
insert into t1 (oref, grp, ie1, ie2) values
('aa', 10, 2, 1),
('aa', 10, 1, 1),
('aa', 20, 2, 1),
('bb', 10, 3, 1),
('cc', 10, 4, 2),
('cc', 20, 3, 2),
('ee', 10, 2, 1),
('ee', 10, 1, 2),
('ff', 20, 2, 2),
('ff', 20, 1, 2);
create table t2 (oref char(4), a int, b int);
insert into t2 values
('ee', NULL, 1),
('bb', 2, 1),
('ff', 2, 2),
('cc', 3, NULL),
('bb', NULL, NULL),
('aa', 1, 1),
('dd', 1, NULL);
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
select oref, a, b,
(a,b) in (select min(ie1),max(ie2) from t1
where oref=t2.oref group by grp) Z
from t2;
select oref, a, b from t2 where
(a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
select oref, a, b from t2 where
(a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
alter table t1 add index idx(ie1,ie2);
explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
explain extended
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
drop table t1,t2;
create table t1 (oref char(4), grp int, ie int primary key);
insert into t1 (oref, grp, ie) values
('aa', 10, 2),
('aa', 10, 1),
('bb', 10, 3),
('cc', 10, 4),
('cc', 20, 5),
('cc', 10, 6);
create table t2 (oref char(4), a int);
insert into t2 values
('ee', NULL),
('bb', 2),
('cc', 5),
('cc', 2),
('cc', NULL),
('aa', 1),
('bb', NULL);
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
explain
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
drop table t1,t2;

46
mysql-test/t/trigger.test
View File

@ -1554,4 +1554,50 @@ select * from t1;
drop table t1;
#
# Bug#25398: crash when a trigger contains a SELECT with
# trigger fields in the select list under DISTINCT
#
CREATE TABLE t1 (
id int NOT NULL DEFAULT '0',
a varchar(10) NOT NULL,
b varchar(10),
c varchar(10),
d timestamp NOT NULL,
PRIMARY KEY (id, a)
);
CREATE TABLE t2 (
fubar_id int unsigned NOT NULL DEFAULT '0',
last_change_time datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
PRIMARY KEY (fubar_id)
);
DELIMITER |;
CREATE TRIGGER fubar_change
AFTER UPDATE ON t1
FOR EACH ROW
BEGIN
INSERT INTO t2 (fubar_id, last_change_time)
SELECT DISTINCT NEW.id AS fubar_id, NOW() AS last_change_time
FROM t1 WHERE (id = NEW.id) AND (OLD.c != NEW.c)
ON DUPLICATE KEY UPDATE
last_change_time =
IF((fubar_id = NEW.id)AND(OLD.c != NEW.c),NOW(),last_change_time);
END
|
DELIMITER ;|
INSERT INTO t1 (id,a, b,c,d) VALUES
(1,'a','b','c',now()),(2,'a','b','c',now());
UPDATE t1 SET c='Bang!' WHERE id=1;
SELECT fubar_id FROM t2;
DROP TABLE t1,t2;
--echo End of 5.0 tests

47
mysql-test/t/udf.test
View File

@ -242,3 +242,50 @@ drop table bug18761;
select is_const((1,2,3));
drop function if exists is_const;
#
# Bug #25382: Passing NULL to an UDF called from stored procedures
# crashes server
#
--replace_result $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_LIB";
--replace_result $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_double RETURNS REAL SONAME "$UDF_EXAMPLE_LIB";
--replace_result $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "$UDF_EXAMPLE_LIB";
delimiter //;
create function f1(p1 varchar(255))
returns varchar(255)
begin
return metaphon(p1);
end//
create function f2(p1 varchar(255))
returns double
begin
return myfunc_double(p1);
end//
create function f3(p1 varchar(255))
returns double
begin
return myfunc_int(p1);
end//
delimiter ;//
select f3(NULL);
select f2(NULL);
select f1(NULL);
drop function f1;
drop function f2;
drop function f3;
drop function metaphon;
drop function myfunc_double;
drop function myfunc_int;
--echo End of 5.0 tests.

11
mysql-test/t/view.test
View File

@ -2959,6 +2959,17 @@ SELECT * FROM t1;
DROP VIEW v1, v2;
DROP TABLE t1;
#
# Bug #25580: !0 as an operand in a select expression of a view
#
CREATE VIEW v AS SELECT !0 * 5 AS x FROM DUAL;
SHOW CREATE VIEW v;
SELECT !0 * 5 AS x FROM DUAL;
SELECT * FROM v;
DROP VIEW v;
#
# BUG#24293: '\Z' token is not handled correctly in views

23
sql/item.cc
View File

@ -3469,6 +3469,16 @@ Item_field::fix_outer_field(THD *thd, Field **from_field, Item **reference)
{
if (*from_field)
{
if (thd->variables.sql_mode & MODE_ONLY_FULL_GROUP_BY &&
select->cur_pos_in_select_list != UNDEF_POS)
{
/*
As this is an outer field it should be added to the list of
non aggregated fields of the outer select.
*/
marker= select->cur_pos_in_select_list;
select->non_agg_fields.push_back(this);
}
if (*from_field != view_ref_found)
{
prev_subselect_item->used_tables_cache|= (*from_field)->table->map;
@ -3671,10 +3681,11 @@ Item_field::fix_outer_field(THD *thd, Field **from_field, Item **reference)
bool Item_field::fix_fields(THD *thd, Item **reference)
{
DBUG_ASSERT(fixed == 0);
Field *from_field= (Field *)not_found_field;
bool outer_fixed= false;
if (!field) // If field is not checked
{
Field *from_field= (Field *)not_found_field;
bool outer_fixed= false;
/*
In case of view, find_field_in_tables() write pointer to view field
expression to 'reference', i.e. it substitute that expression instead
@ -3766,6 +3777,7 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
goto error;
else if (!ret)
return FALSE;
outer_fixed= 1;
}
set_field(from_field);
@ -3809,6 +3821,13 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
}
#endif
fixed= 1;
if (thd->variables.sql_mode & MODE_ONLY_FULL_GROUP_BY &&
!outer_fixed && !thd->lex->in_sum_func &&
thd->lex->current_select->cur_pos_in_select_list != UNDEF_POS)
{
thd->lex->current_select->non_agg_fields.push_back(this);
marker= thd->lex->current_select->cur_pos_in_select_list;
}
return FALSE;
error:

6
sql/item.h
View File

@ -447,7 +447,8 @@ public:
Item *next;
uint32 max_length;
uint name_length; /* Length of name */
uint8 marker, decimals;
int8 marker;
uint8 decimals;
my_bool maybe_null; /* If item may be null */
my_bool null_value; /* if item is null */
my_bool unsigned_flag;
@ -2263,6 +2264,9 @@ public:
bool fix_fields(THD *, Item **);
void print(String *str);
table_map used_tables() const { return (table_map)0L; }
Field *get_tmp_table_field() { return 0; }
Item *copy_or_same(THD *thd) { return this; }
Item *get_tmp_table_item(THD *thd) { return copy_or_same(thd); }
void cleanup();
private:

50
sql/item_cmpfunc.cc
View File

@ -146,6 +146,22 @@ longlong Item_func_not::val_int()
return ((!null_value && value == 0) ? 1 : 0);
}
/*
We put any NOT expression into parenthesis to avoid
possible problems with internal view representations where
any '!' is converted to NOT. It may cause a problem if
'!' is used in an expression together with other operators
whose precedence is lower than the precedence of '!' yet
higher than the precedence of NOT.
*/
void Item_func_not::print(String *str)
{
str->append('(');
Item_func::print(str);
str->append(')');
}
/*
special NOT for ALL subquery
*/
@ -813,11 +829,35 @@ longlong Item_in_optimizer::val_int()
We disable the predicates we've pushed down into subselect, run the
subselect and see if it has produced any rows.
*/
((Item_in_subselect*)args[1])->enable_pushed_conds= FALSE;
longlong tmp= args[1]->val_bool_result();
result_for_null_param= null_value=
!((Item_in_subselect*)args[1])->engine->no_rows();
((Item_in_subselect*)args[1])->enable_pushed_conds= TRUE;
Item_in_subselect *item_subs=(Item_in_subselect*)args[1];
if (cache->cols() == 1)
{
item_subs->set_cond_guard_var(0, FALSE);
longlong tmp= args[1]->val_bool_result();
result_for_null_param= null_value= !item_subs->engine->no_rows();
item_subs->set_cond_guard_var(0, TRUE);
}
else
{
uint i;
uint ncols= cache->cols();
/*
Turn off the predicates that are based on column compares for
which the left part is currently NULL
*/
for (i= 0; i < ncols; i++)
{
if (cache->el(i)->null_value)
item_subs->set_cond_guard_var(i, FALSE);
}
longlong tmp= args[1]->val_bool_result();
result_for_null_param= null_value= !item_subs->engine->no_rows();
/* Turn all predicates back on */
for (i= 0; i < ncols; i++)
item_subs->set_cond_guard_var(i, TRUE);
}
}
}
return 0;

8
sql/item_cmpfunc.h
View File

@ -269,6 +269,7 @@ public:
enum Functype functype() const { return NOT_FUNC; }
const char *func_name() const { return "not"; }
Item *neg_transformer(THD *thd);
void print(String *str);
};
class Item_maxmin_subselect;
@ -311,6 +312,7 @@ public:
enum Functype functype() const { return TRIG_COND_FUNC; };
const char *func_name() const { return "trigcond"; };
bool const_item() const { return FALSE; }
bool *get_trig_var() { return trig_var; }
};
class Item_func_not_all :public Item_func_not
@ -965,6 +967,10 @@ class Item_func_in :public Item_func_opt_neg
{
public:
Item_result cmp_type;
/*
an array of values when the right hand arguments of IN
are all SQL constant and there are no nulls
*/
in_vector *array;
cmp_item *in_item;
bool have_null;
@ -990,7 +996,7 @@ public:
DBUG_VOID_RETURN;
}
optimize_type select_optimize() const
{ return array ? OPTIMIZE_KEY : OPTIMIZE_NONE; }
{ return OPTIMIZE_KEY; }
void print(String *str);
enum Functype functype() const { return IN_FUNC; }
const char *func_name() const { return " IN "; }

9
sql/item_func.cc
View File

@ -2729,25 +2729,28 @@ udf_handler::fix_fields(THD *thd, Item_result_field *func,
if (arguments[i]->const_item())
{
if (arguments[i]->null_value)
continue;
switch (arguments[i]->result_type())
{
case STRING_RESULT:
case DECIMAL_RESULT:
{
String *res= arguments[i]->val_str(&buffers[i]);
if (arguments[i]->null_value)
continue;
f_args.args[i]= (char*) res->ptr();
break;
}
case INT_RESULT:
*((longlong*) to)= arguments[i]->val_int();
if (arguments[i]->null_value)
continue;
f_args.args[i]= to;
to+= ALIGN_SIZE(sizeof(longlong));
break;
case REAL_RESULT:
*((double*) to)= arguments[i]->val_real();
if (arguments[i]->null_value)
continue;
f_args.args[i]= to;
to+= ALIGN_SIZE(sizeof(double));
break;

13
sql/item_strfunc.cc
View File

@ -1694,6 +1694,19 @@ String *Item_func_encode::val_str(String *str)
return res;
}
void Item_func_encode::print(String *str)
{
str->append(func_name());
str->append('(');
args[0]->print(str);
str->append(',');
str->append('\'');
str->append(seed);
str->append('\'');
str->append(')');
}
String *Item_func_decode::val_str(String *str)
{
DBUG_ASSERT(fixed == 1);

11
sql/item_strfunc.h
View File

@ -358,19 +358,24 @@ class Item_func_encode :public Item_str_func
{
protected:
SQL_CRYPT sql_crypt;
String seed;
public:
Item_func_encode(Item *a, char *seed):
Item_str_func(a),sql_crypt(seed) {}
Item_func_encode(Item *a, char *seed_arg):
Item_str_func(a), sql_crypt(seed_arg)
{
seed.copy(seed_arg, strlen(seed_arg), default_charset_info);
}
String *val_str(String *);
void fix_length_and_dec();
const char *func_name() const { return "encode"; }
void print(String *str);
};
class Item_func_decode :public Item_func_encode
{
public:
Item_func_decode(Item *a, char *seed): Item_func_encode(a,seed) {}
Item_func_decode(Item *a, char *seed_arg): Item_func_encode(a, seed_arg) {}
String *val_str(String *);
const char *func_name() const { return "decode"; }
};

294
sql/item_subselect.cc
View File

@ -191,16 +191,16 @@ bool Item_subselect::fix_fields(THD *thd_param, Item **ref)
return res;
}
bool Item_subselect::exec(bool full_scan)
bool Item_subselect::exec()
{
int res;
res= engine->exec(full_scan);
res= engine->exec();
if (engine_changed)
{
engine_changed= 0;
return exec(full_scan);
return exec();
}
return (res);
}
@ -448,13 +448,13 @@ bool Item_singlerow_subselect::null_inside()
void Item_singlerow_subselect::bring_value()
{
exec(FALSE);
exec();
}
double Item_singlerow_subselect::val_real()
{
DBUG_ASSERT(fixed == 1);
if (!exec(FALSE) && !value->null_value)
if (!exec() && !value->null_value)
{
null_value= 0;
return value->val_real();
@ -469,7 +469,7 @@ double Item_singlerow_subselect::val_real()
longlong Item_singlerow_subselect::val_int()
{
DBUG_ASSERT(fixed == 1);
if (!exec(FALSE) && !value->null_value)
if (!exec() && !value->null_value)
{
null_value= 0;
return value->val_int();
@ -483,7 +483,7 @@ longlong Item_singlerow_subselect::val_int()
String *Item_singlerow_subselect::val_str(String *str)
{
if (!exec(FALSE) && !value->null_value)
if (!exec() && !value->null_value)
{
null_value= 0;
return value->val_str(str);
@ -498,7 +498,7 @@ String *Item_singlerow_subselect::val_str(String *str)
my_decimal *Item_singlerow_subselect::val_decimal(my_decimal *decimal_value)
{
if (!exec(FALSE) && !value->null_value)
if (!exec() && !value->null_value)
{
null_value= 0;
return value->val_decimal(decimal_value);
@ -513,7 +513,7 @@ my_decimal *Item_singlerow_subselect::val_decimal(my_decimal *decimal_value)
bool Item_singlerow_subselect::val_bool()
{
if (!exec(FALSE) && !value->null_value)
if (!exec() && !value->null_value)
{
null_value= 0;
return value->val_bool();
@ -565,7 +565,7 @@ bool Item_in_subselect::test_limit(SELECT_LEX_UNIT *unit)
Item_in_subselect::Item_in_subselect(Item * left_exp,
st_select_lex *select_lex):
Item_exists_subselect(), optimizer(0), transformed(0),
enable_pushed_conds(TRUE), upper_item(0)
pushed_cond_guards(NULL), upper_item(0)
{
DBUG_ENTER("Item_in_subselect::Item_in_subselect");
left_expr= left_exp;
@ -610,7 +610,7 @@ void Item_exists_subselect::fix_length_and_dec()
double Item_exists_subselect::val_real()
{
DBUG_ASSERT(fixed == 1);
if (exec(FALSE))
if (exec())
{
reset();
return 0;
@ -621,7 +621,7 @@ double Item_exists_subselect::val_real()
longlong Item_exists_subselect::val_int()
{
DBUG_ASSERT(fixed == 1);
if (exec(FALSE))
if (exec())
{
reset();
return 0;
@ -632,7 +632,7 @@ longlong Item_exists_subselect::val_int()
String *Item_exists_subselect::val_str(String *str)
{
DBUG_ASSERT(fixed == 1);
if (exec(FALSE))
if (exec())
{
reset();
return 0;
@ -645,7 +645,7 @@ String *Item_exists_subselect::val_str(String *str)
my_decimal *Item_exists_subselect::val_decimal(my_decimal *decimal_value)
{
DBUG_ASSERT(fixed == 1);
if (exec(FALSE))
if (exec())
{
reset();
return 0;
@ -658,7 +658,7 @@ my_decimal *Item_exists_subselect::val_decimal(my_decimal *decimal_value)
bool Item_exists_subselect::val_bool()
{
DBUG_ASSERT(fixed == 1);
if (exec(FALSE))
if (exec())
{
reset();
return 0;
@ -676,7 +676,7 @@ double Item_in_subselect::val_real()
DBUG_ASSERT(0);
DBUG_ASSERT(fixed == 1);
null_value= 0;
if (exec(!enable_pushed_conds))
if (exec())
{
reset();
null_value= 1;
@ -697,7 +697,7 @@ longlong Item_in_subselect::val_int()
DBUG_ASSERT(0);
DBUG_ASSERT(fixed == 1);
null_value= 0;
if (exec(!enable_pushed_conds))
if (exec())
{
reset();
null_value= 1;
@ -718,7 +718,7 @@ String *Item_in_subselect::val_str(String *str)
DBUG_ASSERT(0);
DBUG_ASSERT(fixed == 1);
null_value= 0;
if (exec(!enable_pushed_conds))
if (exec())
{
reset();
null_value= 1;
@ -738,7 +738,7 @@ bool Item_in_subselect::val_bool()
{
DBUG_ASSERT(fixed == 1);
null_value= 0;
if (exec(!enable_pushed_conds))
if (exec())
{
reset();
null_value= 1;
@ -758,7 +758,7 @@ my_decimal *Item_in_subselect::val_decimal(my_decimal *decimal_value)
DBUG_ASSERT(0);
null_value= 0;
DBUG_ASSERT(fixed == 1);
if (exec(!enable_pushed_conds))
if (exec())
{
reset();
null_value= 1;
@ -922,7 +922,7 @@ Item_in_subselect::single_value_transformer(JOIN *join,
if (!substitution)
{
//first call for this unit
/* We're invoked for the 1st (or the only) SELECT in the subquery UNION */
SELECT_LEX_UNIT *unit= select_lex->master_unit();
substitution= optimizer;
@ -948,19 +948,14 @@ Item_in_subselect::single_value_transformer(JOIN *join,
unit->uncacheable|= UNCACHEABLE_DEPENDENT;
}
if (!abort_on_null && left_expr->maybe_null && !pushed_cond_guards)
{
if (!(pushed_cond_guards= (bool*)join->thd->alloc(sizeof(bool))))
DBUG_RETURN(RES_ERROR);
pushed_cond_guards[0]= TRUE;
}
select_lex->uncacheable|= UNCACHEABLE_DEPENDENT;
/*
Add the left part of a subselect to a WHERE or HAVING clause of
the right part, e.g.
SELECT 1 IN (SELECT a FROM t1) =>
SELECT Item_in_optimizer(1, SELECT a FROM t1 WHERE a=1)
HAVING is used only if the right part contains a SUM function, a GROUP
BY or a HAVING clause.
*/
if (join->having || select_lex->with_sum_func ||
select_lex->group_list.elements)
{
@ -972,13 +967,13 @@ Item_in_subselect::single_value_transformer(JOIN *join,
ref_pointer_array,
(char *)"<ref>",
this->full_name()));
if (!abort_on_null && ((Item*)select_lex->item_list.head())->maybe_null)
if (!abort_on_null && left_expr->maybe_null)
{
/*
We can encounter "NULL IN (SELECT ...)". Wrap the added condition
within a trigger.
within a trig_cond.
*/
item= new Item_func_trig_cond(item, &enable_pushed_conds);
item= new Item_func_trig_cond(item, get_cond_guard(0));
}
/*
@ -987,6 +982,8 @@ Item_in_subselect::single_value_transformer(JOIN *join,
argument (reference) to fix_fields()
*/
select_lex->having= join->having= and_items(join->having, item);
if (join->having == item)
item->name= (char*)in_having_cond;
select_lex->having_fix_field= 1;
/*
we do not check join->having->fixed, because Item_and (from and_items)
@ -1013,14 +1010,19 @@ Item_in_subselect::single_value_transformer(JOIN *join,
item= func->create(expr, item);
if (!abort_on_null && orig_item->maybe_null)
{
having=
new Item_func_trig_cond(new Item_is_not_null_test(this, having),
&enable_pushed_conds);
having= new Item_is_not_null_test(this, having);
if (left_expr->maybe_null)
{
if (!(having= new Item_func_trig_cond(having,
get_cond_guard(0))))
DBUG_RETURN(RES_ERROR);
}
/*
Item_is_not_null_test can't be changed during fix_fields()
we can assign select_lex->having here, and pass 0 as last
argument (reference) to fix_fields()
*/
having->name= (char*)in_having_cond;
select_lex->having= join->having= having;
select_lex->having_fix_field= 1;
/*
@ -1032,17 +1034,25 @@ Item_in_subselect::single_value_transformer(JOIN *join,
select_lex->having_fix_field= 0;
if (tmp)
DBUG_RETURN(RES_ERROR);
/*
NOTE: It is important that we add this "IS NULL" here, even when
orig_item can't be NULL. This is needed so that this predicate is
only used by ref[_or_null] analyzer (and, e.g. is not used by const
propagation).
*/
item= new Item_cond_or(item,
new Item_func_isnull(orig_item));
item= new Item_func_trig_cond(item, &enable_pushed_conds);
}
/*
If we may encounter NULL IN (SELECT ...) and care whether subquery
result is NULL or FALSE, wrap condition in a trig_cond.
*/
if (!abort_on_null && left_expr->maybe_null)
{
if (!(item= new Item_func_trig_cond(item, get_cond_guard(0))))
DBUG_RETURN(RES_ERROR);
}
/*
TODO: figure out why the following is done here in
single_value_transformer but there is no corresponding action in
row_value_transformer?
*/
item->name= (char *)in_additional_cond;
/*
AND can't be changed during fix_fields()
we can assign select_lex->having here, and pass 0 as last
@ -1073,10 +1083,16 @@ Item_in_subselect::single_value_transformer(JOIN *join,
select_lex->ref_pointer_array,
(char *)"<no matter>",
(char *)"<result>"));
new_having= new Item_func_trig_cond(new_having, &enable_pushed_conds);
if (!abort_on_null && left_expr->maybe_null)
{
if (!(new_having= new Item_func_trig_cond(new_having,
get_cond_guard(0))))
DBUG_RETURN(RES_ERROR);
}
new_having->name= (char*)in_having_cond;
select_lex->having= join->having= new_having;
select_lex->having_fix_field= 1;
/*
we do not check join->having->fixed, because comparison function
(from func->create) can't be fixed after creation
@ -1146,6 +1162,15 @@ Item_in_subselect::row_value_transformer(JOIN *join)
thd->lex->current_select= current;
unit->uncacheable|= UNCACHEABLE_DEPENDENT;
if (!abort_on_null && left_expr->maybe_null && !pushed_cond_guards)
{
if (!(pushed_cond_guards= (bool*)join->thd->alloc(sizeof(bool) *
left_expr->cols())))
DBUG_RETURN(RES_ERROR);
for (uint i= 0; i < cols_num; i++)
pushed_cond_guards[i]= TRUE;
}
}
select_lex->uncacheable|= UNCACHEABLE_DEPENDENT;
@ -1162,6 +1187,7 @@ Item_in_subselect::row_value_transformer(JOIN *join)
is_not_null_test(v3))
where is_not_null_test used to register nulls in case if we have
not found matching to return correct NULL value
TODO: say here explicitly if the order of AND parts matters or not.
*/
Item *item_having_part2= 0;
for (uint i= 0; i < cols_num; i++)
@ -1190,21 +1216,28 @@ Item_in_subselect::row_value_transformer(JOIN *join)
(char *)"<no matter>",
(char *)"<list ref>")
);
having_item=
and_items(having_item,
new Item_cond_or(item_eq, item_isnull));
item_having_part2=
and_items(item_having_part2,
new
Item_is_not_null_test(this,
new
Item_ref(&select_lex->context,
select_lex->
ref_pointer_array + i,
(char *)"<no matter>",
(char *)"<list ref>")
)
);
Item *col_item= new Item_cond_or(item_eq, item_isnull);
if (!abort_on_null && left_expr->el(i)->maybe_null)
{
if (!(col_item= new Item_func_trig_cond(col_item, get_cond_guard(i))))
DBUG_RETURN(RES_ERROR);
}
having_item= and_items(having_item, col_item);
Item *item_nnull_test=
new Item_is_not_null_test(this,
new Item_ref(&select_lex->context,
select_lex->
ref_pointer_array + i,
(char *)"<no matter>",
(char *)"<list ref>"));
if (!abort_on_null && left_expr->el(i)->maybe_null)
{
if (!(item_nnull_test=
new Item_func_trig_cond(item_nnull_test, get_cond_guard(i))))
DBUG_RETURN(RES_ERROR);
}
item_having_part2= and_items(item_having_part2, item_nnull_test);
item_having_part2->top_level_item();
}
having_item= and_items(having_item, item_having_part2);
@ -1253,18 +1286,15 @@ Item_in_subselect::row_value_transformer(JOIN *join)
);
if (!abort_on_null)
{
having_item=
and_items(having_item,
new
Item_is_not_null_test(this,
new
Item_ref(&select_lex->context,
select_lex->
ref_pointer_array + i,
(char *)"<no matter>",
(char *)"<list ref>")
)
);
Item *having_col_item=
new Item_is_not_null_test(this,
new
Item_ref(&select_lex->context,
select_lex->ref_pointer_array + i,
(char *)"<no matter>",
(char *)"<list ref>"));
item_isnull= new
Item_func_isnull(new
Item_direct_ref(&select_lex->context,
@ -1273,14 +1303,23 @@ Item_in_subselect::row_value_transformer(JOIN *join)
(char *)"<no matter>",
(char *)"<list ref>")
);
item= new Item_cond_or(item, item_isnull);
/*
TODO: why we create the above for cases where the right part
cant be NULL?
*/
if (left_expr->el(i)->maybe_null)
{
if (!(item= new Item_func_trig_cond(item, get_cond_guard(i))))
DBUG_RETURN(RES_ERROR);
if (!(having_col_item=
new Item_func_trig_cond(having_col_item, get_cond_guard(i))))
DBUG_RETURN(RES_ERROR);
}
having_item= and_items(having_item, having_col_item);
}
where_item= and_items(where_item, item);
}
if (where_item)
where_item= new Item_func_trig_cond(where_item, &enable_pushed_conds);
/*
AND can't be changed during fix_fields()
we can assign select_lex->where here, and pass 0 as last
@ -1294,9 +1333,9 @@ Item_in_subselect::row_value_transformer(JOIN *join)
if (having_item)
{
bool res;
having_item= new Item_func_trig_cond(having_item, &enable_pushed_conds);
select_lex->having= join->having= and_items(join->having, having_item);
if (having_item == select_lex->having)
having_item->name= (char*)in_having_cond;
select_lex->having->top_level_item();
/*
AND can't be changed during fix_fields()
@ -1682,7 +1721,7 @@ int init_read_record_seq(JOIN_TAB *tab);
int join_read_always_key_or_null(JOIN_TAB *tab);
int join_read_next_same_or_null(READ_RECORD *info);
int subselect_single_select_engine::exec(bool full_scan)
int subselect_single_select_engine::exec()
{
DBUG_ENTER("subselect_single_select_engine::exec");
char const *save_where= thd->where;
@ -1720,9 +1759,13 @@ int subselect_single_select_engine::exec(bool full_scan)
if (!executed)
{
item->reset_value_registration();
if (full_scan)
bool have_changed_access= FALSE;
JOIN_TAB *changed_tabs[MAX_TABLES];
JOIN_TAB **last_changed_tab= changed_tabs;
if (item->have_guarded_conds())
{
/*
For at least one of the pushed predicates the following is true:
We should not apply optimizations based on the condition that was
pushed down into the subquery. Those optimizations are ref[_or_null]
acceses. Change them to be full table scans.
@ -1730,32 +1773,36 @@ int subselect_single_select_engine::exec(bool full_scan)
for (uint i=join->const_tables ; i < join->tables ; i++)
{
JOIN_TAB *tab=join->join_tab+i;
if (tab->keyuse && tab->keyuse->outer_ref)
if (tab && tab->keyuse)
{
tab->read_first_record= init_read_record_seq;
tab->read_record.record= tab->table->record[0];
tab->read_record.thd= join->thd;
tab->read_record.ref_length= tab->table->file->ref_length;
for (uint i= 0; i < tab->ref.key_parts; i++)
{
bool *cond_guard= tab->ref.cond_guards[i];
if (cond_guard && !*cond_guard)
{
/* Change the access method to full table scan */
tab->read_first_record= init_read_record_seq;
tab->read_record.record= tab->table->record[0];
tab->read_record.thd= join->thd;
tab->read_record.ref_length= tab->table->file->ref_length;
*(last_changed_tab++)= tab;
break;
}
}
}
}
}
join->exec();
if (full_scan)
/* Enable the optimizations back */
for (JOIN_TAB **ptab= changed_tabs; ptab != last_changed_tab; ptab++)
{
/* Enable the optimizations back */
for (uint i=join->const_tables ; i < join->tables ; i++)
{
JOIN_TAB *tab=join->join_tab+i;
if (tab->keyuse && tab->keyuse->outer_ref)
{
tab->read_record.record= 0;
tab->read_record.ref_length= 0;
tab->read_first_record= join_read_always_key_or_null;
tab->read_record.read_record= join_read_next_same_or_null;
}
}
JOIN_TAB *tab= *ptab;
tab->read_record.record= 0;
tab->read_record.ref_length= 0;
tab->read_first_record= join_read_always_key_or_null;
tab->read_record.read_record= join_read_next_same_or_null;
}
executed= 1;
thd->where= save_where;
@ -1767,13 +1814,9 @@ int subselect_single_select_engine::exec(bool full_scan)
DBUG_RETURN(0);
}
int subselect_union_engine::exec(bool full_scan)
int subselect_union_engine::exec()
{
char const *save_where= thd->where;
/*
Ignore the full_scan parameter: the pushed down predicates are only used
for filtering, and the caller has disabled them if necessary.
*/
int res= unit->exec();
thd->where= save_where;
return res;
@ -1781,7 +1824,7 @@ int subselect_union_engine::exec(bool full_scan)
/*
Search for at least on row satisfying select condition
Search for at least one row satisfying select condition
SYNOPSIS
subselect_uniquesubquery_engine::scan_table()
@ -1790,8 +1833,8 @@ int subselect_union_engine::exec(bool full_scan)
Scan the table using sequential access until we find at least one row
satisfying select condition.
The result of this function (info about whether a row was found) is
stored in this->empty_result_set.
The caller must set this->empty_result_set=FALSE before calling this
function. This function will set it to TRUE if it finds a matching row.
RETURN
FALSE - OK
@ -1803,7 +1846,6 @@ int subselect_uniquesubquery_engine::scan_table()
int error;
TABLE *table= tab->table;
DBUG_ENTER("subselect_uniquesubquery_engine::scan_table");
empty_result_set= TRUE;
if (table->file->inited)
table->file->ha_index_end();
@ -1896,10 +1938,13 @@ bool subselect_uniquesubquery_engine::copy_ref_key()
- FALSE otherwise.
In some cases (IN subselect is a top level item, i.e. abort_on_null==TRUE)
the caller doesn't distinguish between NULL and FALSE result and we just
the caller doesn't distinguish between NULL and FALSE result and we just
return FALSE.
Otherwise we make a full table scan to see if there is at least one matching row.
Otherwise we make a full table scan to see if there is at least one
matching row.
The result of this function (info about whether a row was found) is
stored in this->empty_result_set.
NOTE
RETURN
@ -1907,11 +1952,12 @@ bool subselect_uniquesubquery_engine::copy_ref_key()
TRUE - an error occured while scanning
*/
int subselect_uniquesubquery_engine::exec(bool full_scan)
int subselect_uniquesubquery_engine::exec()
{
DBUG_ENTER("subselect_uniquesubquery_engine::exec");
int error;
TABLE *table= tab->table;
empty_result_set= TRUE;
/* TODO: change to use of 'full_scan' here? */
if (copy_ref_key())
@ -1932,9 +1978,13 @@ int subselect_uniquesubquery_engine::exec(bool full_scan)
{
error= 0;
table->null_row= 0;
((Item_in_subselect *) item)->value= (!table->status &&
(!cond || cond->val_int()) ? 1 :
0);
if (!table->status && (!cond || cond->val_int()))
{
((Item_in_subselect *) item)->value= 1;
empty_result_set= FALSE;
}
else
((Item_in_subselect *) item)->value= 0;
}
DBUG_RETURN(error != 0);
@ -2000,7 +2050,7 @@ subselect_uniquesubquery_engine::~subselect_uniquesubquery_engine()
1
*/
int subselect_indexsubquery_engine::exec(bool full_scan)
int subselect_indexsubquery_engine::exec()
{
DBUG_ENTER("subselect_indexsubquery_engine::exec");
int error;
@ -2041,8 +2091,9 @@ int subselect_indexsubquery_engine::exec(bool full_scan)
table->null_row= 0;
if (!table->status)
{
if (!cond || cond->val_int())
if ((!cond || cond->val_int()) && (!having || having->val_int()))
{
empty_result_set= FALSE;
if (null_finding)
((Item_in_subselect *) item)->was_null= 1;
else
@ -2185,11 +2236,16 @@ void subselect_indexsubquery_engine::print(String *str)
str->append(key_info->name);
if (check_null)
str->append(STRING_WITH_LEN(" checking NULL"));
if (cond)
if (cond)
{
str->append(STRING_WITH_LEN(" where "));
cond->print(str);
}
if (having)
{
str->append(STRING_WITH_LEN(" having "));
having->print(str);
}
str->append(')');
}

92
sql/item_subselect.h
View File

@ -94,7 +94,7 @@ public:
return null_value;
}
bool fix_fields(THD *thd, Item **ref);
virtual bool exec(bool full_scan);
virtual bool exec();
virtual void fix_length_and_dec();
table_map used_tables() const;
table_map not_null_tables() const { return 0; }
@ -104,6 +104,7 @@ public:
Item *get_tmp_table_item(THD *thd);
void update_used_tables();
void print(String *str);
virtual bool have_guarded_conds() { return FALSE; }
bool change_engine(subselect_engine *eng)
{
old_engine= engine;
@ -249,13 +250,21 @@ protected:
bool transformed;
public:
/* Used to trigger on/off conditions that were pushed down to subselect */
bool enable_pushed_conds;
bool *pushed_cond_guards;
bool *get_cond_guard(int i)
{
return pushed_cond_guards ? pushed_cond_guards + i : NULL;
}
void set_cond_guard_var(int i, bool v) { pushed_cond_guards[i]= v; }
bool have_guarded_conds() { return test(pushed_cond_guards); }
Item_func_not_all *upper_item; // point on NOT/NOP before ALL/SOME subquery
Item_in_subselect(Item * left_expr, st_select_lex *select_lex);
Item_in_subselect()
:Item_exists_subselect(), optimizer(0), abort_on_null(0), transformed(0),
enable_pushed_conds(TRUE), upper_item(0)
pushed_cond_guards(NULL), upper_item(0)
{}
subs_type substype() { return IN_SUBS; }
@ -340,23 +349,22 @@ public:
SYNOPSIS
exec()
full_scan TRUE - Pushed-down predicates are disabled, the engine
must disable made based on those predicates.
FALSE - Pushed-down predicates are in effect.
DESCRIPTION
Execute the engine. The result of execution is subquery value that is
either captured by previously set up select_result-based 'sink' or
stored somewhere by the exec() method itself.
A required side effect: if full_scan==TRUE, subselect_engine->no_rows()
should return correct result.
A required side effect: If at least one pushed-down predicate is
disabled, subselect_engine->no_rows() must return correct result after
the exec() call.
RETURN
0 - OK
1 - Either an execution error, or the engine was be "changed", and
1 - Either an execution error, or the engine was "changed", and the
caller should call exec() again for the new engine.
*/
virtual int exec(bool full_scan)= 0;
virtual int exec()= 0;
virtual uint cols()= 0; /* return number of columns in select */
virtual uint8 uncacheable()= 0; /* query is uncacheable */
enum Item_result type() { return res_type; }
@ -391,7 +399,7 @@ public:
void cleanup();
int prepare();
void fix_length_and_dec(Item_cache** row);
int exec(bool full_scan);
int exec();
uint cols();
uint8 uncacheable();
void exclude();
@ -415,7 +423,7 @@ public:
void cleanup();
int prepare();
void fix_length_and_dec(Item_cache** row);
int exec(bool full_scan);
int exec();
uint cols();
uint8 uncacheable();
void exclude();
@ -429,11 +437,30 @@ public:
struct st_join_table;
/*
A subquery execution engine that evaluates the subquery by doing one index
lookup in a unique index.
This engine is used to resolve subqueries in forms
outer_expr IN (SELECT tbl.unique_key FROM tbl WHERE subq_where)
or, tuple-based:
(oe1, .. oeN) IN (SELECT uniq_key_part1, ... uniq_key_partK
FROM tbl WHERE subqwhere)
i.e. the subquery is a single table SELECT without GROUP BY, aggregate
functions, etc.
*/
class subselect_uniquesubquery_engine: public subselect_engine
{
protected:
st_join_table *tab;
Item *cond;
Item *cond; /* The WHERE condition of subselect */
/*
TRUE<=> last execution produced empty set. Valid only when left
expression is NULL.
@ -453,7 +480,7 @@ public:
void cleanup();
int prepare();
void fix_length_and_dec(Item_cache** row);
int exec(bool full_scan);
int exec();
uint cols() { return 1; }
uint8 uncacheable() { return UNCACHEABLE_DEPENDENT; }
void exclude();
@ -471,16 +498,47 @@ class subselect_indexsubquery_engine: public subselect_uniquesubquery_engine
{
/* FALSE for 'ref', TRUE for 'ref-or-null'. */
bool check_null;
/*
The "having" clause. This clause (further reffered to as "artificial
having") was inserted by subquery transformation code. It contains
Item(s) that have a side-effect: they record whether the subquery has
produced a row with NULL certain components. We need to use it for cases
like
(oe1, oe2) IN (SELECT t.key, t.no_key FROM t1)
where we do index lookup on t.key=oe1 but need also to check if there
was a row such that t.no_key IS NULL.
NOTE: This is currently here and not in the uniquesubquery_engine. Ideally
it should have been in uniquesubquery_engine in order to allow execution of
subqueries like
(oe1, oe2) IN (SELECT primary_key, non_key_maybe_null_field FROM tbl)
We could use uniquesubquery_engine for the first component and let
Item_is_not_null_test( non_key_maybe_null_field) to handle the second.
However, subqueries like the above are currently not handled by index
lookup-based subquery engines, the engine applicability check misses
them: it doesn't switch the engine for case of artificial having and
[eq_]ref access (only for artifical having + ref_or_null or no having).
The above example subquery is handled as a full-blown SELECT with eq_ref
access to one table.
Due to this limitation, the "artificial having" currently needs to be
checked by only in indexsubquery_engine.
*/
Item *having;
public:
// constructor can assign THD because it will be called after JOIN::prepare
subselect_indexsubquery_engine(THD *thd, st_join_table *tab_arg,
Item_subselect *subs, Item *where,
bool chk_null)
Item *having_arg, bool chk_null)
:subselect_uniquesubquery_engine(thd, tab_arg, subs, where),
check_null(chk_null)
check_null(chk_null),
having(having_arg)
{}
int exec(bool full_scan);
int exec();
void print (String *str);
};

6
sql/mysql_priv.h
View File

@ -414,7 +414,11 @@ MY_LOCALE *my_locale_by_number(uint number);
#define UNCACHEABLE_EXPLAIN 8
/* Don't evaluate subqueries in prepare even if they're not correlated */
#define UNCACHEABLE_PREPARE 16
/* For uncorrelated SELECT in an UNION with some correlated SELECTs */
#define UNCACHEABLE_UNITED 32
/* Used to check GROUP BY list in the MODE_ONLY_FULL_GROUP_BY mode */
#define UNDEF_POS (-1)
#ifdef EXTRA_DEBUG
/*
Sync points allow us to force the server to reach a certain line of code
@ -1197,7 +1201,7 @@ extern const char *command_name[];
extern const char *first_keyword, *my_localhost, *delayed_user, *binary_keyword;
extern const char **errmesg; /* Error messages */
extern const char *myisam_recover_options_str;
extern const char *in_left_expr_name, *in_additional_cond;
extern const char *in_left_expr_name, *in_additional_cond, *in_having_cond;
extern const char * const triggers_file_ext;
extern const char * const trigname_file_ext;
extern Eq_creator eq_creator;

3
sql/mysqld.cc
View File

@ -453,10 +453,13 @@ char *mysqld_unix_port, *opt_mysql_tmpdir;
const char **errmesg; /* Error messages */
const char *myisam_recover_options_str="OFF";
const char *myisam_stats_method_str="nulls_unequal";
/* name of reference on left espression in rewritten IN subquery */
const char *in_left_expr_name= "<left expr>";
/* name of additional condition */
const char *in_additional_cond= "<IN COND>";
const char *in_having_cond= "<IN HAVING>";
my_decimal decimal_zero;
/* classes for comparation parsing/processing */
Eq_creator eq_creator;

4
sql/sql_base.cc
View File

@ -4406,6 +4406,7 @@ bool setup_fields(THD *thd, Item **ref_pointer_array,
bzero(ref_pointer_array, sizeof(Item *) * fields.elements);
Item **ref= ref_pointer_array;
thd->lex->current_select->cur_pos_in_select_list= 0;
while ((item= it++))
{
if (!item->fixed && item->fix_fields(thd, it.ref()) ||
@ -4421,7 +4422,10 @@ bool setup_fields(THD *thd, Item **ref_pointer_array,
sum_func_list)
item->split_sum_func(thd, ref_pointer_array, *sum_func_list);
thd->used_tables|= item->used_tables();
thd->lex->current_select->cur_pos_in_select_list++;
}
thd->lex->current_select->cur_pos_in_select_list= UNDEF_POS;
thd->lex->allow_sum_func= save_allow_sum_func;
thd->set_query_id= save_set_query_id;
DBUG_RETURN(test(thd->net.report_error));

4
sql/sql_delete.cc
View File

@ -142,7 +142,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
if (order && order->elements)
{
uint length;
uint length= 0;
SORT_FIELD *sortorder;
TABLE_LIST tables;
List<Item> fields;
@ -162,7 +162,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
DBUG_RETURN(TRUE);
}
if (!select && limit != HA_POS_ERROR)
if ((!select || table->quick_keys.is_clear_all()) && limit != HA_POS_ERROR)
usable_index= get_index_for_order(table, (ORDER*)(order->first), limit);
if (usable_index == MAX_KEY)

93
sql/sql_insert.cc
View File

@ -80,6 +80,65 @@ static bool check_view_insertability(THD *thd, TABLE_LIST *view);
#define my_safe_afree(ptr, size, min_length) if (size > min_length) my_free(ptr,MYF(0))
#endif
/*
Check that insert/update fields are from the same single table of a view.
SYNOPSIS
check_view_single_update()
fields The insert/update fields to be checked.
view The view for insert.
map [in/out] The insert table map.
DESCRIPTION
This function is called in 2 cases:
1. to check insert fields. In this case *map will be set to 0.
Insert fields are checked to be all from the same single underlying
table of the given view. Otherwise the error is thrown. Found table
map is returned in the map parameter.
2. to check update fields of the ON DUPLICATE KEY UPDATE clause.
In this case *map contains table_map found on the previous call of
the function to check insert fields. Update fields are checked to be
from the same table as the insert fields.
RETURN
0 OK
1 Error
*/
bool check_view_single_update(List<Item> &fields, TABLE_LIST *view,
table_map *map)
{
/* it is join view => we need to find the table for update */
List_iterator_fast<Item> it(fields);
Item *item;
TABLE_LIST *tbl= 0; // reset for call to check_single_table()
table_map tables= 0;
while ((item= it++))
tables|= item->used_tables();
/* Check found map against provided map */
if (*map)
{
if (tables != *map)
goto error;
return FALSE;
}
if (view->check_single_table(&tbl, tables, view) || tbl == 0)
goto error;
view->table= tbl->table;
*map= tables;
return FALSE;
error:
my_error(ER_VIEW_MULTIUPDATE, MYF(0),
view->view_db.str, view->view_name.str);
return TRUE;
}
/*
Check if insert fields are correct.
@ -104,7 +163,7 @@ static bool check_view_insertability(THD *thd, TABLE_LIST *view);
static int check_insert_fields(THD *thd, TABLE_LIST *table_list,
List<Item> &fields, List<Item> &values,
bool check_unique)
bool check_unique, table_map *map)
{
TABLE *table= table_list->table;
@ -177,21 +236,9 @@ static int check_insert_fields(THD *thd, TABLE_LIST *table_list,
if (table_list->effective_algorithm == VIEW_ALGORITHM_MERGE)
{
/* it is join view => we need to find table for update */
List_iterator_fast<Item> it(fields);
Item *item;
TABLE_LIST *tbl= 0; // reset for call to check_single_table()
table_map map= 0;
while ((item= it++))
map|= item->used_tables();
if (table_list->check_single_table(&tbl, map, table_list) || tbl == 0)
{
my_error(ER_VIEW_MULTIUPDATE, MYF(0),
table_list->view_db.str, table_list->view_name.str);
if (check_view_single_update(fields, table_list, map))
return -1;
}
table_list->table= table= tbl->table;
table= table_list->table;
}
if (check_unique && thd->dupp_field)
@ -241,7 +288,7 @@ static int check_insert_fields(THD *thd, TABLE_LIST *table_list,
*/
static int check_update_fields(THD *thd, TABLE_LIST *insert_table_list,
List<Item> &update_fields)
List<Item> &update_fields, table_map *map)
{
TABLE *table= insert_table_list->table;
query_id_t timestamp_query_id;
@ -264,6 +311,10 @@ static int check_update_fields(THD *thd, TABLE_LIST *insert_table_list,
if (setup_fields(thd, 0, update_fields, 1, 0, 0))
return -1;
if (insert_table_list->effective_algorithm == VIEW_ALGORITHM_MERGE &&
check_view_single_update(update_fields, insert_table_list, map))
return -1;
if (table->timestamp_field)
{
/* Don't set timestamp column if this is modified. */
@ -910,6 +961,7 @@ bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
Name_resolution_context_state ctx_state;
bool insert_into_view= (table_list->view != 0);
bool res= 0;
table_map map= 0;
DBUG_ENTER("mysql_prepare_insert");
DBUG_PRINT("enter", ("table_list 0x%lx, table 0x%lx, view %d",
(ulong)table_list, (ulong)table,
@ -959,12 +1011,12 @@ bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
/* Prepare the fields in the statement. */
if (values &&
!(res= check_insert_fields(thd, context->table_list, fields, *values,
!insert_into_view) ||
!insert_into_view, &map) ||
setup_fields(thd, 0, *values, 0, 0, 0)) &&
duplic == DUP_UPDATE)
{
select_lex->no_wrap_view_item= TRUE;
res= check_update_fields(thd, context->table_list, update_fields);
res= check_update_fields(thd, context->table_list, update_fields, &map);
select_lex->no_wrap_view_item= FALSE;
/*
When we are not using GROUP BY we can refer to other tables in the
@ -2286,6 +2338,7 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
{
LEX *lex= thd->lex;
int res;
table_map map= 0;
SELECT_LEX *lex_current_select_save= lex->current_select;
DBUG_ENTER("select_insert::prepare");
@ -2297,7 +2350,7 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
*/
lex->current_select= &lex->select_lex;
res= check_insert_fields(thd, table_list, *fields, values,
!insert_into_view) ||
!insert_into_view, &map) ||
setup_fields(thd, 0, values, 0, 0, 0);
if (info.handle_duplicates == DUP_UPDATE)
@ -2315,7 +2368,7 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
lex->select_lex.no_wrap_view_item= TRUE;
res= res || check_update_fields(thd, context->table_list,
*info.update_fields);
*info.update_fields, &map);
lex->select_lex.no_wrap_view_item= FALSE;
/*
When we are not using GROUP BY we can refer to other tables in the

14
sql/sql_lex.cc
View File

@ -1190,6 +1190,8 @@ void st_select_lex::init_select()
offset_limit= 0; /* denotes the default offset = 0 */
with_sum_func= 0;
is_correlated= 0;
cur_pos_in_select_list= UNDEF_POS;
non_agg_fields.empty();
}
/*
@ -1379,9 +1381,17 @@ void st_select_lex::mark_as_dependent(SELECT_LEX *last)
if (!(s->uncacheable & UNCACHEABLE_DEPENDENT))
{
// Select is dependent of outer select
s->uncacheable|= UNCACHEABLE_DEPENDENT;
s->uncacheable= (s->uncacheable & ~UNCACHEABLE_UNITED) |
UNCACHEABLE_DEPENDENT;
SELECT_LEX_UNIT *munit= s->master_unit();
munit->uncacheable|= UNCACHEABLE_DEPENDENT;
munit->uncacheable= (munit->uncacheable & ~UNCACHEABLE_UNITED) |
UNCACHEABLE_DEPENDENT;
for (SELECT_LEX *sl= munit->first_select(); sl ; sl= sl->next_select())
{
if (sl != s &&
!(sl->uncacheable & (UNCACHEABLE_DEPENDENT | UNCACHEABLE_UNITED)))
sl->uncacheable|= UNCACHEABLE_UNITED;
}
}
is_correlated= TRUE;
this->master_unit()->item->is_correlated= TRUE;

6
sql/sql_lex.h
View File

@ -469,7 +469,7 @@ public:
void set_thd(THD *thd_arg) { thd= thd_arg; }
friend void lex_start(THD *thd, uchar *buf, uint length);
friend int subselect_union_engine::exec(bool);
friend int subselect_union_engine::exec();
List<Item> *get_unit_column_types();
};
@ -580,6 +580,10 @@ public:
bool no_wrap_view_item;
/* exclude this select from check of unique_table() */
bool exclude_from_table_unique_test;
/* List of fields that aren't under an aggregate function */
List<Item_field> non_agg_fields;
/* index in the select list of the expression currently being fixed */
int cur_pos_in_select_list;
List<udf_func> udf_list; /* udf function calls stack */

2
sql/sql_prepare.cc
View File

@ -1676,7 +1676,7 @@ static bool check_prepared_statement(Prepared_statement *stmt,
case SQLCOM_INSERT:
res= mysql_test_insert(stmt, tables, lex->field_list,
lex->many_values,
select_lex->item_list, lex->value_list,
lex->update_list, lex->value_list,
lex->duplicates);
break;

299
sql/sql_select.cc
View File

@ -513,72 +513,88 @@ err:
/*
test if it is known for optimisation IN subquery
Remove the predicates pushed down into the subquery
SYNOPSIS
JOIN::test_in_subselect()
where - pointer for variable in which conditions should be
stored if subquery is known
JOIN::remove_subq_pushed_predicates()
where IN Must be NULL
OUT The remaining WHERE condition, or NULL
RETURN
1 - known
0 - unknown
DESCRIPTION
Given that this join will be executed using (unique|index)_subquery,
without "checking NULL", remove the predicates that were pushed down
into the subquery.
We can remove the equalities that will be guaranteed to be true by the
fact that subquery engine will be using index lookup.
If the subquery compares scalar values, we can remove the condition that
was wrapped into trig_cond (it will be checked when needed by the subquery
engine)
If the subquery compares row values, we need to keep the wrapped
equalities in the WHERE clause: when the left (outer) tuple has both NULL
and non-NULL values, we'll do a full table scan and will rely on the
equalities corresponding to non-NULL parts of left tuple to filter out
non-matching records.
*/
bool JOIN::test_in_subselect(Item **where)
void JOIN::remove_subq_pushed_predicates(Item **where)
{
if (conds->type() == Item::FUNC_ITEM &&
((Item_func *)this->conds)->functype() == Item_func::EQ_FUNC &&
((Item_func *)conds)->arguments()[0]->type() == Item::REF_ITEM &&
((Item_func *)conds)->arguments()[1]->type() == Item::FIELD_ITEM)
{
join_tab->info= "Using index";
*where= 0;
return 1;
return;
}
if (conds->type() == Item::COND_ITEM &&
((class Item_func *)this->conds)->functype() ==
Item_func::COND_AND_FUNC)
{
if ((*where= remove_additional_cond(conds)))
join_tab->info= "Using index; Using where";
else
join_tab->info= "Using index";
return 1;
*where= remove_additional_cond(conds);
}
return 0;
}
/*
Check if the passed HAVING clause is a clause added by subquery optimizer
Index lookup-based subquery: save some flags for EXPLAIN output
SYNOPSIS
is_having_subq_predicates()
having Having clause
save_index_subquery_explain_info()
join_tab Subquery's join tab (there is only one as index lookup is
only used for subqueries that are single-table SELECTs)
where Subquery's WHERE clause
RETURN
TRUE The passed HAVING clause was added by the subquery optimizer
FALSE Otherwise
DESCRIPTION
For index lookup-based subquery (i.e. one executed with
subselect_uniquesubquery_engine or subselect_indexsubquery_engine),
check its EXPLAIN output row should contain
"Using index" (TAB_INFO_FULL_SCAN_ON_NULL)
"Using Where" (TAB_INFO_USING_WHERE)
"Full scan on NULL key" (TAB_INFO_FULL_SCAN_ON_NULL)
and set appropriate flags in join_tab->packed_info.
*/
bool is_having_subq_predicates(Item *having)
static void save_index_subquery_explain_info(JOIN_TAB *join_tab, Item* where)
{
if (having->type() == Item::FUNC_ITEM)
join_tab->packed_info= TAB_INFO_HAVE_VALUE;
if (join_tab->table->used_keys.is_set(join_tab->ref.key))
join_tab->packed_info |= TAB_INFO_USING_INDEX;
if (where)
join_tab->packed_info |= TAB_INFO_USING_WHERE;
for (uint i = 0; i < join_tab->ref.key_parts; i++)
{
if (((Item_func *) having)->functype() == Item_func::ISNOTNULLTEST_FUNC)
return TRUE;
if (((Item_func *) having)->functype() == Item_func::TRIG_COND_FUNC)
if (join_tab->ref.cond_guards[i])
{
having= ((Item_func*)having)->arguments()[0];
if (((Item_func *) having)->functype() == Item_func::ISNOTNULLTEST_FUNC)
return TRUE;
join_tab->packed_info |= TAB_INFO_FULL_SCAN_ON_NULL;
break;
}
return TRUE;
}
return FALSE;
}
/*
global select optimisation.
return 0 - success
@ -1017,51 +1033,47 @@ JOIN::optimize()
if (join_tab[0].type == JT_EQ_REF &&
join_tab[0].ref.items[0]->name == in_left_expr_name)
{
if (test_in_subselect(&where))
{
join_tab[0].type= JT_UNIQUE_SUBQUERY;
error= 0;
DBUG_RETURN(unit->item->
change_engine(new
subselect_uniquesubquery_engine(thd,
join_tab,
unit->item,
where)));
}
remove_subq_pushed_predicates(&where);
save_index_subquery_explain_info(join_tab, where);
join_tab[0].type= JT_UNIQUE_SUBQUERY;
error= 0;
DBUG_RETURN(unit->item->
change_engine(new
subselect_uniquesubquery_engine(thd,
join_tab,
unit->item,
where)));
}
else if (join_tab[0].type == JT_REF &&
join_tab[0].ref.items[0]->name == in_left_expr_name)
{
if (test_in_subselect(&where))
{
join_tab[0].type= JT_INDEX_SUBQUERY;
error= 0;
DBUG_RETURN(unit->item->
change_engine(new
subselect_indexsubquery_engine(thd,
join_tab,
unit->item,
where,
0)));
}
remove_subq_pushed_predicates(&where);
save_index_subquery_explain_info(join_tab, where);
join_tab[0].type= JT_INDEX_SUBQUERY;
error= 0;
DBUG_RETURN(unit->item->
change_engine(new
subselect_indexsubquery_engine(thd,
join_tab,
unit->item,
where,
NULL,
0)));
}
} else if (join_tab[0].type == JT_REF_OR_NULL &&
join_tab[0].ref.items[0]->name == in_left_expr_name &&
is_having_subq_predicates(having))
having->name == in_having_cond)
{
join_tab[0].type= JT_INDEX_SUBQUERY;
error= 0;
if ((conds= remove_additional_cond(conds)))
join_tab->info= "Using index; Using where";
else
join_tab->info= "Using index";
conds= remove_additional_cond(conds);
save_index_subquery_explain_info(join_tab, conds);
DBUG_RETURN(unit->item->
change_engine(new subselect_indexsubquery_engine(thd,
join_tab,
unit->item,
conds,
having,
1)));
}
@ -2557,9 +2569,7 @@ typedef struct key_field_t { // Used when finding key fields
when val IS NULL.
*/
bool null_rejecting;
/* TRUE<=> This ref access is an outer subquery reference access */
bool outer_ref;
bool *cond_guard; /* See KEYUSE::cond_guard */
} KEY_FIELD;
/* Values in optimize */
@ -2858,7 +2868,7 @@ add_key_field(KEY_FIELD **key_fields,uint and_level, Item_func *cond,
cond->functype() == Item_func::MULT_EQUAL_FUNC) &&
((*value)->type() == Item::FIELD_ITEM) &&
((Item_field*)*value)->field->maybe_null());
(*key_fields)->outer_ref= FALSE;
(*key_fields)->cond_guard= NULL;
(*key_fields)++;
}
@ -2955,25 +2965,26 @@ add_key_fields(JOIN *join, KEY_FIELD **key_fields, uint *and_level,
}
/*
Subquery optimization: check if the encountered condition is one
added by condition push down into subquery.
Subquery optimization: Conditions that are pushed down into subqueries
are wrapped into Item_func_trig_cond. We process the wrapped condition
but need to set cond_guard for KEYUSE elements generated from it.
*/
{
if (cond->type() == Item::FUNC_ITEM &&
((Item_func*)cond)->functype() == Item_func::TRIG_COND_FUNC)
{
cond= ((Item_func*)cond)->arguments()[0];
Item *cond_arg= ((Item_func*)cond)->arguments()[0];
if (!join->group_list && !join->order &&
join->unit->item &&
join->unit->item->substype() == Item_subselect::IN_SUBS &&
!join->unit->first_select()->next_select())
{
KEY_FIELD *save= *key_fields;
add_key_fields(join, key_fields, and_level, cond, usable_tables,
add_key_fields(join, key_fields, and_level, cond_arg, usable_tables,
sargables);
// Indicate that this ref access candidate is for subquery lookup:
for (; save != *key_fields; save++)
save->outer_ref= TRUE;
save->cond_guard= ((Item_func_trig_cond*)cond)->get_trig_var();
}
return;
}
@ -3153,7 +3164,7 @@ add_key_part(DYNAMIC_ARRAY *keyuse_array,KEY_FIELD *key_field)
keyuse.used_tables=key_field->val->used_tables();
keyuse.optimize= key_field->optimize & KEY_OPTIMIZE_REF_OR_NULL;
keyuse.null_rejecting= key_field->null_rejecting;
keyuse.outer_ref= key_field->outer_ref;
keyuse.cond_guard= key_field->cond_guard;
VOID(insert_dynamic(keyuse_array,(gptr) &keyuse));
}
}
@ -4992,7 +5003,8 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
if (!(j->ref.key_buff= (byte*) thd->calloc(ALIGN_SIZE(length)*2)) ||
!(j->ref.key_copy= (store_key**) thd->alloc((sizeof(store_key*) *
(keyparts+1)))) ||
!(j->ref.items= (Item**) thd->alloc(sizeof(Item*)*keyparts)))
!(j->ref.items= (Item**) thd->alloc(sizeof(Item*)*keyparts)) ||
!(j->ref.cond_guards= (bool**) thd->alloc(sizeof(uint*)*keyparts)))
{
DBUG_RETURN(TRUE);
}
@ -5007,6 +5019,8 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
if (ftkey)
{
j->ref.items[0]=((Item_func*)(keyuse->val))->key_item();
/* Predicates pushed down into subquery can't be used FT access */
j->ref.cond_guards[0]= NULL;
if (keyuse->used_tables)
DBUG_RETURN(TRUE); // not supported yet. SerG
@ -5023,6 +5037,7 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
uint maybe_null= test(keyinfo->key_part[i].null_bit);
j->ref.items[i]=keyuse->val; // Save for cond removal
j->ref.cond_guards[i]= keyuse->cond_guard;
if (keyuse->null_rejecting)
j->ref.null_rejecting |= 1 << i;
keyuse_uses_no_tables= keyuse_uses_no_tables && !keyuse->used_tables;
@ -7653,7 +7668,7 @@ change_cond_ref_to_const(THD *thd, I_List<COND_CMP> *save_list,
SYNOPSIS
remove_additional_cond()
conds - condition for processing
conds Condition for processing
RETURN VALUES
new conditions
@ -8766,8 +8781,7 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
if (type != Item::FIELD_ITEM &&
item->real_item()->type() == Item::FIELD_ITEM &&
(item->type() != Item::REF_ITEM ||
!((Item_ref *) item)->depended_from))
!((Item_ref *) item)->depended_from)
{
orig_item= item;
item= item->real_item();
@ -10912,7 +10926,9 @@ int rr_sequential(READ_RECORD *info);
int init_read_record_seq(JOIN_TAB *tab)
{
tab->read_record.read_record= rr_sequential;
return tab->read_record.file->ha_rnd_init(1);
if (tab->read_record.file->ha_rnd_init(1))
return 1;
return (*tab->read_record.read_record)(&tab->read_record);
}
static int
@ -12263,7 +12279,7 @@ static int
create_sort_index(THD *thd, JOIN *join, ORDER *order,
ha_rows filesort_limit, ha_rows select_limit)
{
uint length;
uint length= 0;
ha_rows examined_rows;
TABLE *table;
SQL_SELECT *select;
@ -12284,8 +12300,10 @@ create_sort_index(THD *thd, JOIN *join, ORDER *order,
!(join->select_options & SELECT_BIG_RESULT)) &&
test_if_skip_sort_order(tab,order,select_limit,0))
DBUG_RETURN(0);
for (ORDER *ord= join->order; ord; ord= ord->next)
length++;
if (!(join->sortorder=
make_unireg_sortorder(order,&length,join->sortorder)))
make_unireg_sortorder(order, &length, join->sortorder)))
goto err; /* purecov: inspected */
table->sort.io_cache=(IO_CACHE*) my_malloc(sizeof(IO_CACHE),
@ -12691,8 +12709,10 @@ SORT_FIELD *make_unireg_sortorder(ORDER *order, uint *length,
for (ORDER *tmp = order; tmp; tmp=tmp->next)
count++;
if (!sortorder)
sortorder= (SORT_FIELD*) sql_alloc(sizeof(SORT_FIELD)*(count+1));
pos=sort=sortorder;
sortorder= (SORT_FIELD*) sql_alloc(sizeof(SORT_FIELD) *
(max(count, *length) + 1));
pos= sort= sortorder;
if (!pos)
return 0;
@ -13215,49 +13235,83 @@ setup_group(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,
bool *hidden_group_fields)
{
*hidden_group_fields=0;
ORDER *ord;
if (!order)
return 0; /* Everything is ok */
if (thd->variables.sql_mode & MODE_ONLY_FULL_GROUP_BY)
{
Item *item;
List_iterator<Item> li(fields);
while ((item=li++))
item->marker=0; /* Marker that field is not used */
}
uint org_fields=all_fields.elements;
thd->where="group statement";
for (; order; order=order->next)
for (ord= order; ord; ord= ord->next)
{
if (find_order_in_list(thd, ref_pointer_array, tables, order, fields,
if (find_order_in_list(thd, ref_pointer_array, tables, ord, fields,
all_fields, TRUE))
return 1;
(*order->item)->marker=1; /* Mark found */
if ((*order->item)->with_sum_func)
(*ord->item)->marker= UNDEF_POS; /* Mark found */
if ((*ord->item)->with_sum_func)
{
my_error(ER_WRONG_GROUP_FIELD, MYF(0), (*order->item)->full_name());
my_error(ER_WRONG_GROUP_FIELD, MYF(0), (*ord->item)->full_name());
return 1;
}
}
if (thd->variables.sql_mode & MODE_ONLY_FULL_GROUP_BY)
{
/* Don't allow one to use fields that is not used in GROUP BY */
Item *item;
List_iterator<Item> li(fields);
/*
Don't allow one to use fields that is not used in GROUP BY
For each select a list of field references that aren't under an
aggregate function is created. Each field in this list keeps the
position of the select list expression which it belongs to.
while ((item=li++))
First we check an expression from the select list against the GROUP BY
list. If it's found there then it's ok. It's also ok if this expression
is a constant or an aggregate function. Otherwise we scan the list
of non-aggregated fields and if we'll find at least one field reference
that belongs to this expression and doesn't occur in the GROUP BY list
we throw an error. If there are no fields in the created list for a
select list expression this means that all fields in it are used under
aggregate functions.
*/
Item *item;
Item_field *field;
int cur_pos_in_select_list= 0;
List_iterator<Item> li(fields);
List_iterator<Item_field> naf_it(thd->lex->current_select->non_agg_fields);
field= naf_it++;
while (field && (item=li++))
{
if (item->type() != Item::SUM_FUNC_ITEM && !item->marker &&
!item->const_item())
if (item->type() != Item::SUM_FUNC_ITEM && item->marker >= 0 &&
!item->const_item() &&
!(item->real_item()->type() == Item::FIELD_ITEM &&
item->used_tables() & OUTER_REF_TABLE_BIT))
{
/*
TODO: change ER_WRONG_FIELD_WITH_GROUP to more detailed
ER_NON_GROUPING_FIELD_USED
*/
my_error(ER_WRONG_FIELD_WITH_GROUP, MYF(0), item->full_name());
return 1;
while (field)
{
/* Skip fields from previous expressions. */
if (field->marker < cur_pos_in_select_list)
goto next_field;
/* Found a field from the next expression. */
if (field->marker > cur_pos_in_select_list)
break;
/*
Check whether the field occur in the GROUP BY list.
Throw the error later if the field isn't found.
*/
for (ord= order; ord; ord= ord->next)
if ((*ord->item)->eq((Item*)field, 0))
goto next_field;
/*
TODO: change ER_WRONG_FIELD_WITH_GROUP to more detailed
ER_NON_GROUPING_FIELD_USED
*/
my_error(ER_WRONG_FIELD_WITH_GROUP, MYF(0), field->full_name());
return 1;
next_field:
field= naf_it++;
}
}
cur_pos_in_select_list++;
}
}
if (org_fields != all_fields.elements)
@ -13383,10 +13437,12 @@ count_field_types(TMP_TABLE_PARAM *param, List<Item> &fields,
param->quick_group=1;
while ((field=li++))
{
Item::Type type=field->real_item()->type();
if (type == Item::FIELD_ITEM)
Item::Type type=field->type();
Item::Type real_type= field->real_item()->type();
if (type == Item::FIELD_ITEM || (real_type == Item::FIELD_ITEM &&
!((Item_ref *) field)->depended_from))
param->field_count++;
else if (type == Item::SUM_FUNC_ITEM)
else if (real_type == Item::SUM_FUNC_ITEM)
{
if (! field->const_item())
{
@ -14820,6 +14876,24 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
if (tab->info)
item_list.push_back(new Item_string(tab->info,strlen(tab->info),cs));
else if (tab->packed_info & TAB_INFO_HAVE_VALUE)
{
if (tab->packed_info & TAB_INFO_USING_INDEX)
extra.append(STRING_WITH_LEN("; Using index"));
if (tab->packed_info & TAB_INFO_USING_WHERE)
extra.append(STRING_WITH_LEN("; Using where"));
if (tab->packed_info & TAB_INFO_FULL_SCAN_ON_NULL)
extra.append(STRING_WITH_LEN("; Full scan on NULL key"));
/* Skip initial "; "*/
const char *str= extra.ptr();
uint32 len= extra.length();
if (len)
{
str += 2;
len -= 2;
}
item_list.push_back(new Item_string(str, len, cs));
}
else
{
if (quick_type == QUICK_SELECT_I::QS_TYPE_ROR_UNION ||
@ -14878,6 +14952,15 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
}
if (distinct & test_all_bits(used_tables,thd->used_tables))
extra.append(STRING_WITH_LEN("; Distinct"));
for (uint part= 0; part < tab->ref.key_parts; part++)
{
if (tab->ref.cond_guards[part])
{
extra.append(STRING_WITH_LEN("; Full scan on NULL key"));
break;
}
}
/* Skip initial "; "*/
const char *str= extra.ptr();

42
sql/sql_select.h
View File

@ -35,8 +35,17 @@ typedef struct keyuse_t {
satisfied if val has NULL 'value'.
*/
bool null_rejecting;
/* TRUE<=> This ref access is an outer subquery reference access */
bool outer_ref;
/*
!NULL - This KEYUSE was created from an equality that was wrapped into
an Item_func_trig_cond. This means the equality (and validity of
this KEYUSE element) can be turned on and off. The on/off state
is indicted by the pointed value:
*cond_guard == TRUE <=> equality condition is on
*cond_guard == FALSE <=> equality condition is off
NULL - Otherwise (the source equality can't be turned off)
*/
bool *cond_guard;
} KEYUSE;
class store_key;
@ -51,6 +60,18 @@ typedef struct st_table_ref
byte *key_buff2; // key_buff+key_length
store_key **key_copy; //
Item **items; // val()'s for each keypart
/*
Array of pointers to trigger variables. Some/all of the pointers may be
NULL. The ref access can be used iff
for each used key part i, (!cond_guards[i] || *cond_guards[i])
This array is used by subquery code. The subquery code may inject
triggered conditions, i.e. conditions that can be 'switched off'. A ref
access created from such condition is not valid when at least one of the
underlying conditions is switched off (see subquery code for more details)
*/
bool **cond_guards;
/*
(null_rejecting & (1<<i)) means the condition is '=' and no matching
rows will be produced if items[i] IS NULL (see add_not_null_conds())
@ -99,6 +120,13 @@ enum enum_nested_loop_state
NESTED_LOOP_QUERY_LIMIT= 3, NESTED_LOOP_CURSOR_LIMIT= 4
};
/* Values for JOIN_TAB::packed_info */
#define TAB_INFO_HAVE_VALUE 1
#define TAB_INFO_USING_INDEX 2
#define TAB_INFO_USING_WHERE 4
#define TAB_INFO_FULL_SCAN_ON_NULL 8
typedef enum_nested_loop_state
(*Next_select_func)(JOIN *, struct st_join_table *, bool);
typedef int (*Read_record_func)(struct st_join_table *tab);
@ -119,7 +147,15 @@ typedef struct st_join_table {
st_join_table *last_inner; /* last table table for embedding outer join */
st_join_table *first_upper; /* first inner table for embedding outer join */
st_join_table *first_unmatched; /* used for optimization purposes only */
/* Special content for EXPLAIN 'Extra' column or NULL if none */
const char *info;
/*
Bitmap of TAB_INFO_* bits that encodes special line for EXPLAIN 'Extra'
column, or 0 if there is no info.
*/
uint packed_info;
Read_record_func read_first_record;
Next_select_func next_select;
READ_RECORD read_record;
@ -386,7 +422,7 @@ public:
Item_sum ***func);
int rollup_send_data(uint idx);
int rollup_write_data(uint idx, TABLE *table);
bool test_in_subselect(Item **where);
void remove_subq_pushed_predicates(Item **where);
/*
Release memory and, if possible, the open tables held by this execution
plan (and nested plans). It's used to release some tables before

2
sql/sql_table.cc
View File

@ -3931,7 +3931,7 @@ copy_data_between_tables(TABLE *from,TABLE *to,
Copy_field *copy,*copy_end;
ulong found_count,delete_count;
THD *thd= current_thd;
uint length;
uint length= 0;
SORT_FIELD *sortorder;
READ_RECORD info;
TABLE_LIST tables;

1
sql/sql_union.cc
View File

@ -732,6 +732,7 @@ bool st_select_lex::cleanup()
{
error= (bool) ((uint) error | (uint) lex_unit->cleanup());
}
non_agg_fields.empty();
DBUG_RETURN(error);
}

2
sql/sql_update.cc
View File

@ -302,7 +302,7 @@ int mysql_update(THD *thd,
Doing an ORDER BY; Let filesort find and sort the rows we are going
to update
*/
uint length;
uint length= 0;
SORT_FIELD *sortorder;
ha_rows examined_rows;