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This commit is contained in:
Kristofer Pettersson 2008-08-04 14:37:28 +02:00
commit be7d4dc8ee
9 changed files with 143 additions and 15 deletions
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46
mysql-test/r/func_if.result
View File

@ -131,3 +131,49 @@ drop table t1;
select if(0, 18446744073709551610, 18446744073709551610);
if(0, 18446744073709551610, 18446744073709551610)
18446744073709551610
CREATE TABLE t1(a DECIMAL(10,3));
SELECT t1.a,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,0)))))))))))))))))))))))))))))) + 1
FROM t1;
a IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((R
DROP TABLE t1;
End of 5.0 tests

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

@ -4396,4 +4396,15 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (<cache>(1) = <ref_null_helper>(1))))
DROP TABLE t1;
CREATE TABLE t1(pk int PRIMARY KEY, a int, INDEX idx(a));
INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20);
CREATE TABLE t2(pk int PRIMARY KEY, a int, b int, INDEX idxa(a));
INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100);
SELECT * FROM t1
WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b);
pk a
1 10
3 30
2 20
DROP TABLE t1,t2;
End of 5.0 tests.

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

@ -108,3 +108,46 @@ drop table t1;
select if(0, 18446744073709551610, 18446744073709551610);
#
# Bug #37662: nested if() inside sum() is parsed in exponential time
#
CREATE TABLE t1(a DECIMAL(10,3));
# check : should be fast. more than few secs means failure.
SELECT t1.a,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,
IF((ROUND(t1.a,2)=1), 2,0)))))))))))))))))))))))))))))) + 1
FROM t1;
DROP TABLE t1;
--echo End of 5.0 tests

12
mysql-test/t/subselect.test
View File

@ -3295,5 +3295,17 @@ EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
DROP TABLE t1;
#
# Bug #38191: Server crash with subquery containing DISTINCT and ORDER BY
#
CREATE TABLE t1(pk int PRIMARY KEY, a int, INDEX idx(a));
INSERT INTO t1 VALUES (1, 10), (3, 30), (2, 20);
CREATE TABLE t2(pk int PRIMARY KEY, a int, b int, INDEX idxa(a));
INSERT INTO t2 VALUES (2, 20, 700), (1, 10, 200), (4, 10, 100);
SELECT * FROM t1
WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b);
DROP TABLE t1,t2;
--echo End of 5.0 tests.

1
scripts/mysql_system_tables.sql
View File

@ -2,6 +2,7 @@
-- The system tables of MySQL Server
--
set sql_mode='';
set storage_engine=myisam;
CREATE TABLE IF NOT EXISTS db ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Select_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Insert_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Update_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Delete_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Create_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Drop_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Grant_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, References_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Index_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Alter_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Create_tmp_table_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Lock_tables_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Create_view_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Show_view_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Create_routine_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Alter_routine_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, Execute_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, PRIMARY KEY Host (Host,Db,User), KEY User (User) ) engine=MyISAM CHARACTER SET utf8 COLLATE utf8_bin comment='Database privileges';

12
sql/item.cc
View File

@ -429,8 +429,11 @@ uint Item::decimal_precision() const
Item_result restype= result_type();
if ((restype == DECIMAL_RESULT) || (restype == INT_RESULT))
return min(my_decimal_length_to_precision(max_length, decimals, unsigned_flag),
DECIMAL_MAX_PRECISION);
{
uint prec=
my_decimal_length_to_precision(max_length, decimals, unsigned_flag);
return min(prec, DECIMAL_MAX_PRECISION);
}
return min(max_length, DECIMAL_MAX_PRECISION);
}
@ -6838,8 +6841,9 @@ bool Item_type_holder::join_types(THD *thd, Item *item)
if (Field::result_merge_type(fld_type) == DECIMAL_RESULT)
{
decimals= min(max(decimals, item->decimals), DECIMAL_MAX_SCALE);
int precision= min(max(prev_decimal_int_part, item->decimal_int_part())
+ decimals, DECIMAL_MAX_PRECISION);
int item_int_part= item->decimal_int_part();
int item_prec = max(prev_decimal_int_part, item_int_part) + decimals;
int precision= min(item_prec, DECIMAL_MAX_PRECISION);
unsigned_flag&= item->unsigned_flag;
max_length= my_decimal_precision_to_length(precision, decimals,
unsigned_flag);

12
sql/item_cmpfunc.cc
View File

@ -2098,8 +2098,11 @@ Item_func_ifnull::fix_length_and_dec()
uint Item_func_ifnull::decimal_precision() const
{
int max_int_part=max(args[0]->decimal_int_part(),args[1]->decimal_int_part());
return min(max_int_part + decimals, DECIMAL_MAX_PRECISION);
int arg0_int_part= args[0]->decimal_int_part();
int arg1_int_part= args[1]->decimal_int_part();
int max_int_part= max(arg0_int_part, arg1_int_part);
int precision= max_int_part + decimals;
return min(precision, DECIMAL_MAX_PRECISION);
}
@ -2281,8 +2284,9 @@ Item_func_if::fix_length_and_dec()
uint Item_func_if::decimal_precision() const
{
int precision=(max(args[1]->decimal_int_part(),args[2]->decimal_int_part())+
decimals);
int arg1_prec= args[1]->decimal_int_part();
int arg2_prec= args[2]->decimal_int_part();
int precision=max(arg1_prec,arg2_prec) + decimals;
return min(precision, DECIMAL_MAX_PRECISION);
}

15
sql/item_func.cc
View File

@ -1156,9 +1156,10 @@ my_decimal *Item_func_plus::decimal_op(my_decimal *decimal_value)
void Item_func_additive_op::result_precision()
{
decimals= max(args[0]->decimals, args[1]->decimals);
int max_int_part= max(args[0]->decimal_precision() - args[0]->decimals,
args[1]->decimal_precision() - args[1]->decimals);
int precision= min(max_int_part + 1 + decimals, DECIMAL_MAX_PRECISION);
int arg1_int= args[0]->decimal_precision() - args[0]->decimals;
int arg2_int= args[1]->decimal_precision() - args[1]->decimals;
int est_prec= max(arg1_int, arg2_int) + 1 + decimals;
int precision= min(est_prec, DECIMAL_MAX_PRECISION);
/* Integer operations keep unsigned_flag if one of arguments is unsigned */
if (result_type() == INT_RESULT)
@ -1267,8 +1268,8 @@ void Item_func_mul::result_precision()
else
unsigned_flag= args[0]->unsigned_flag & args[1]->unsigned_flag;
decimals= min(args[0]->decimals + args[1]->decimals, DECIMAL_MAX_SCALE);
int precision= min(args[0]->decimal_precision() + args[1]->decimal_precision(),
DECIMAL_MAX_PRECISION);
uint est_prec = args[0]->decimal_precision() + args[1]->decimal_precision();
uint precision= min(est_prec, DECIMAL_MAX_PRECISION);
max_length= my_decimal_precision_to_length(precision, decimals,unsigned_flag);
}
@ -1315,8 +1316,8 @@ my_decimal *Item_func_div::decimal_op(my_decimal *decimal_value)
void Item_func_div::result_precision()
{
uint precision=min(args[0]->decimal_precision() + prec_increment,
DECIMAL_MAX_PRECISION);
uint arg_prec= args[0]->decimal_precision() + prec_increment;
uint precision=min(arg_prec, DECIMAL_MAX_PRECISION);
/* Integer operations keep unsigned_flag if one of arguments is unsigned */
if (result_type() == INT_RESULT)
unsigned_flag= args[0]->unsigned_flag | args[1]->unsigned_flag;

6
sql/sql_select.cc
View File

@ -6469,6 +6469,12 @@ void JOIN::cleanup(bool full)
if (tmp_join)
tmp_table_param.copy_field= 0;
group_fields.delete_elements();
/*
Ensure that the above delete_elements() would not be called
twice for the same list.
*/
if (tmp_join && tmp_join != this)
tmp_join->group_fields= group_fields;
/*
We can't call delete_elements() on copy_funcs as this will cause
problems in free_elements() as some of the elements are then deleted.