Merge sunlight.local:/local_work/tmp_merge-4.1-opt-mysql
into sunlight.local:/local_work/tmp_merge-5.0-opt-mysql mysql-test/t/select.test: Auto merged sql/sql_select.cc: Auto merged mysql-test/r/func_group.result: Manual merge mysql-test/r/select.result: Manual merge mysql-test/r/subselect.result: Manual merge
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@ -821,6 +821,144 @@ SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
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MAX(id)
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NULL
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DROP TABLE t1;
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create table t1m (a int) engine=myisam;
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create table t1i (a int) engine=innodb;
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create table t2m (a int) engine=myisam;
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create table t2i (a int) engine=innodb;
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insert into t2m values (5);
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insert into t2i values (5);
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select min(a) from t1m;
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min(a)
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NULL
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select min(7) from t1m;
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min(7)
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NULL
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select min(7) from DUAL;
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min(7)
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NULL
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explain select min(7) from t2m join t1m;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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select min(7) from t2m join t1m;
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min(7)
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NULL
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select max(a) from t1m;
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max(a)
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NULL
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select max(7) from t1m;
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max(7)
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NULL
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select max(7) from DUAL;
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max(7)
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NULL
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explain select max(7) from t2m join t1m;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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select max(7) from t2m join t1m;
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max(7)
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NULL
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select 1, min(a) from t1m where a=99;
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1 min(a)
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1 NULL
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select 1, min(a) from t1m where 1=99;
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1 min(a)
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1 NULL
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select 1, min(1) from t1m where a=99;
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1 min(1)
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1 NULL
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select 1, min(1) from t1m where 1=99;
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1 min(1)
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1 NULL
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select 1, max(a) from t1m where a=99;
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1 max(a)
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1 NULL
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select 1, max(a) from t1m where 1=99;
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1 max(a)
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1 NULL
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select 1, max(1) from t1m where a=99;
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1 max(1)
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1 NULL
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select 1, max(1) from t1m where 1=99;
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1 max(1)
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1 NULL
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select min(a) from t1i;
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min(a)
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NULL
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select min(7) from t1i;
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min(7)
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NULL
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select min(7) from DUAL;
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min(7)
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NULL
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explain select min(7) from t2i join t1i;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2i ALL NULL NULL NULL NULL 1
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1 SIMPLE t1i ALL NULL NULL NULL NULL 1
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select min(7) from t2i join t1i;
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min(7)
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NULL
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select max(a) from t1i;
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max(a)
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NULL
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select max(7) from t1i;
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max(7)
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NULL
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select max(7) from DUAL;
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max(7)
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NULL
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explain select max(7) from t2i join t1i;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2i ALL NULL NULL NULL NULL 1
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1 SIMPLE t1i ALL NULL NULL NULL NULL 1
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select max(7) from t2i join t1i;
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max(7)
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NULL
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select 1, min(a) from t1i where a=99;
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1 min(a)
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1 NULL
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select 1, min(a) from t1i where 1=99;
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1 min(a)
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1 NULL
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select 1, min(1) from t1i where a=99;
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1 min(1)
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1 NULL
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select 1, min(1) from t1i where 1=99;
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1 min(1)
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1 NULL
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select 1, max(a) from t1i where a=99;
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1 max(a)
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1 NULL
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select 1, max(a) from t1i where 1=99;
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1 max(a)
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1 NULL
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select 1, max(1) from t1i where a=99;
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1 max(1)
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1 NULL
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select 1, max(1) from t1i where 1=99;
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1 max(1)
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1 NULL
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explain select count(*), min(7), max(7) from t1m, t1i;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1m system NULL NULL NULL NULL 0 const row not found
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1 SIMPLE t1i ALL NULL NULL NULL NULL 1
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select count(*), min(7), max(7) from t1m, t1i;
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count(*) min(7) max(7)
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0 NULL NULL
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explain select count(*), min(7), max(7) from t1m, t2i;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1m system NULL NULL NULL NULL 0 const row not found
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1 SIMPLE t2i ALL NULL NULL NULL NULL 1
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select count(*), min(7), max(7) from t1m, t2i;
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count(*) min(7) max(7)
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0 NULL NULL
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explain select count(*), min(7), max(7) from t2m, t1i;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2m system NULL NULL NULL NULL 1
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1 SIMPLE t1i ALL NULL NULL NULL NULL 1
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select count(*), min(7), max(7) from t2m, t1i;
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count(*) min(7) max(7)
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0 NULL NULL
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drop table t1m, t1i, t2m, t2i;
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CREATE TABLE t1 (id int PRIMARY KEY, b char(3), INDEX(b));
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INSERT INTO t1 VALUES (1,'xx'), (2,'aa');
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SELECT * FROM t1;
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@ -3151,6 +3151,55 @@ select count(*)
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from t1 inner join (t2 right join t3 on t2.id = t3.b_id) on t1.id = t3.a_id;
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count(*)
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6
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CREATE TABLE t1 (key1 float default NULL, UNIQUE KEY key1 (key1));
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CREATE TABLE t2 (key2 float default NULL, UNIQUE KEY key2 (key2));
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INSERT INTO t1 VALUES (0.3762),(0.3845),(0.6158),(0.7941);
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INSERT INTO t2 VALUES (1.3762),(1.3845),(1.6158),(1.7941);
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explain select max(key1) from t1 where key1 <= 0.6158;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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explain select max(key2) from t2 where key2 <= 1.6158;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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explain select min(key1) from t1 where key1 >= 0.3762;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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explain select min(key2) from t2 where key2 >= 1.3762;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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explain select max(key1), min(key2) from t1, t2
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where key1 <= 0.6158 and key2 >= 1.3762;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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explain select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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explain select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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select max(key1) from t1 where key1 <= 0.6158;
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max(key1)
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0.61580002307892
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select max(key2) from t2 where key2 <= 1.6158;
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max(key2)
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1.6158000230789
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select min(key1) from t1 where key1 >= 0.3762;
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min(key1)
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0.37619999051094
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select min(key2) from t2 where key2 >= 1.3762;
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min(key2)
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1.3761999607086
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select max(key1), min(key2) from t1, t2
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where key1 <= 0.6158 and key2 >= 1.3762;
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max(key1) min(key2)
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0.61580002307892 1.3761999607086
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select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5;
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max(key1)
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0.61580002307892
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select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5;
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min(key1)
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0.37619999051094
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DROP TABLE t1,t2;
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drop table t1,t2,t3;
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create table t1 (a int);
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create table t2 (b int);
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@ -2319,6 +2319,36 @@ SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NUL
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EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL;
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SELECT STRAIGHT_JOIN SQL_NO_CACHE * FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL;
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DROP TABLE IF EXISTS t1,t2;
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#
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# Bug #20954 "avg(keyval) retuns 0.38 but max(keyval) returns an empty set"
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#
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--disable_ps_protocol
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CREATE TABLE t1 (key1 float default NULL, UNIQUE KEY key1 (key1));
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CREATE TABLE t2 (key2 float default NULL, UNIQUE KEY key2 (key2));
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INSERT INTO t1 VALUES (0.3762),(0.3845),(0.6158),(0.7941);
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INSERT INTO t2 VALUES (1.3762),(1.3845),(1.6158),(1.7941);
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explain select max(key1) from t1 where key1 <= 0.6158;
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explain select max(key2) from t2 where key2 <= 1.6158;
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explain select min(key1) from t1 where key1 >= 0.3762;
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explain select min(key2) from t2 where key2 >= 1.3762;
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explain select max(key1), min(key2) from t1, t2
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where key1 <= 0.6158 and key2 >= 1.3762;
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explain select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5;
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explain select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5;
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select max(key1) from t1 where key1 <= 0.6158;
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select max(key2) from t2 where key2 <= 1.6158;
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select min(key1) from t1 where key1 >= 0.3762;
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select min(key2) from t2 where key2 >= 1.3762;
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select max(key1), min(key2) from t1, t2
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where key1 <= 0.6158 and key2 >= 1.3762;
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select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5;
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select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5;
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DROP TABLE t1,t2;
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--enable_ps_protocol
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# End of 4.1 tests
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#
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@ -679,6 +679,24 @@ JOIN::optimize()
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DBUG_PRINT("info",("Select tables optimized away"));
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zero_result_cause= "Select tables optimized away";
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tables_list= 0; // All tables resolved
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/*
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Extract all table-independent conditions and replace the WHERE
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clause with them. All other conditions were computed by opt_sum_query
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and the MIN/MAX/COUNT function(s) have been replaced by constants,
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so there is no need to compute the whole WHERE clause again.
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Notice that make_cond_for_table() will always succeed to remove all
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computed conditions, because opt_sum_query() is applicable only to
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conjunctions.
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*/
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if (conds)
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{
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COND *table_independent_conds=
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make_cond_for_table(conds, PSEUDO_TABLE_BITS, 0);
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DBUG_EXECUTE("where",
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print_where(table_independent_conds,
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"where after opt_sum_query()"););
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conds= table_independent_conds;
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}
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}
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}
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if (!tables_list)
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