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select.result, func_group.result, sql_select.cc:
After merge fix
This commit is contained in:
evgen@moonbone.local
@ -821,144 +821,6 @@ 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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@ -2762,6 +2762,55 @@ a b a b
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1 NULL 4 10
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2 10 4 10
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DROP TABLE IF EXISTS t1,t2;
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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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CREATE TABLE t1 (
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K2C4 varchar(4) character set latin1 collate latin1_bin NOT NULL default '',
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K4N4 varchar(4) character set latin1 collate latin1_bin NOT NULL default '0000',
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@ -3151,55 +3200,6 @@ 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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@ -687,8 +687,9 @@ JOIN::optimize()
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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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Preserve conditions for EXPLAIN.
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*/
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if (conds)
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if (conds && !(thd->lex->describe & DESCRIBE_EXTENDED))
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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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