mirror of
https://github.com/MariaDB/server.git
synced 2025-07-30 16:24:05 +03:00
Merge moonbone.local:/work/tmp_merge-4.1
into moonbone.local:/work/tmp_merge-4.1-opt-mysql
This commit is contained in:
@ -824,6 +824,7 @@ select 1, min(a) from t1m where 1=99;
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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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@ -835,6 +836,7 @@ select 1, max(a) from t1m where 1=99;
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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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|
@ -1036,4 +1036,32 @@ a c
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abc abc abc
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xyz xyz xyz
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DROP TABLE t1;
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CREATE TABLE t1 (s varchar(10));
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INSERT INTO t1 VALUES ('yadda'), ('yaddy');
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(s) > 'ab';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
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Warnings:
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Note 1003 select test.t1.s AS `s` from test.t1 where (trim(test.t1.s) > _latin1'ab')
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM('y' FROM s) > 'ab';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
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Warnings:
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Note 1003 select test.t1.s AS `s` from test.t1 where (trim(both _latin1'y' from test.t1.s) > _latin1'ab')
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(LEADING 'y' FROM s) > 'ab';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
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Warnings:
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Note 1003 select test.t1.s AS `s` from test.t1 where (trim(leading _latin1'y' from test.t1.s) > _latin1'ab')
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(TRAILING 'y' FROM s) > 'ab';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
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Warnings:
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Note 1003 select test.t1.s AS `s` from test.t1 where (trim(trailing _latin1'y' from test.t1.s) > _latin1'ab')
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(BOTH 'y' FROM s) > 'ab';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
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Warnings:
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Note 1003 select test.t1.s AS `s` from test.t1 where (trim(both _latin1'y' from test.t1.s) > _latin1'ab')
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DROP TABLE t1;
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End of 4.1 tests
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@ -2744,3 +2744,78 @@ SELECT i='1e+01',i=1e+01, i in (1e+01), i in ('1e+01') FROM t1;
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i='1e+01' i=1e+01 i in (1e+01) i in ('1e+01')
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0 1 1 1
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DROP TABLE t1;
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CREATE TABLE t1 (a int, b int);
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INSERT INTO t1 VALUES (1,1), (2,1), (4,10);
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CREATE TABLE t2 (a int PRIMARY KEY, b int, KEY b (b));
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INSERT INTO t2 VALUES (1,NULL), (2,10);
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ALTER TABLE t1 ENABLE KEYS;
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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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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index b b 5 NULL 2 Using index
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1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
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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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a b a b
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1 NULL 1 1
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1 NULL 2 1
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1 NULL 4 10
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2 10 4 10
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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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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index b b 5 NULL 2 Using index
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1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
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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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a b a b
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1 NULL 1 1
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1 NULL 2 1
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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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|
@ -539,7 +539,7 @@ EXPLAIN EXTENDED SELECT MAX(numreponse) FROM t1 WHERE numeropost='1';
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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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Warnings:
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Note 1003 select max(test.t1.numreponse) AS `MAX(numreponse)` from test.t1 where (test.t1.numeropost = _latin1'1')
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Note 1003 select max(test.t1.numreponse) AS `MAX(numreponse)` from test.t1
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EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 Using index
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@ -2868,3 +2868,30 @@ select 1 from dual where 1 < any (select 2 from dual);
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select 1 from dual where 1 < all (select 2 from dual where 1!=1);
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1
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1
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create table t1 (s1 char);
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insert into t1 values (1),(2);
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select * from t1 where (s1 < any (select s1 from t1));
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s1
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1
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select * from t1 where not (s1 < any (select s1 from t1));
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s1
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2
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select * from t1 where (s1 < ALL (select s1+1 from t1));
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s1
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1
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select * from t1 where not(s1 < ALL (select s1+1 from t1));
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s1
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2
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select * from t1 where (s1+1 = ANY (select s1 from t1));
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s1
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1
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select * from t1 where NOT(s1+1 = ANY (select s1 from t1));
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s1
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2
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select * from t1 where (s1 = ALL (select s1/s1 from t1));
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s1
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1
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select * from t1 where NOT(s1 = ALL (select s1/s1 from t1));
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s1
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2
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drop table t1;
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@ -130,3 +130,15 @@ id select_type table type possible_keys key key_len ref rows Extra
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5 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX PRIMARY 32 func 1 Using index; Using where
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6 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 32 func 1 Using index; Using where
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drop table t1, t2, t3, t4;
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CREATE TABLE t1 (a int(10) , PRIMARY KEY (a)) Engine=InnoDB;
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INSERT INTO t1 VALUES (1),(2);
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CREATE TABLE t2 (a int(10), PRIMARY KEY (a)) Engine=InnoDB;
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INSERT INTO t2 VALUES (1);
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CREATE TABLE t3 (a int(10), b int(10), c int(10),
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PRIMARY KEY (a)) Engine=InnoDB;
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INSERT INTO t3 VALUES (1,2,1);
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SELECT t1.* FROM t1 WHERE (SELECT COUNT(*) FROM t3,t2 WHERE t3.c=t2.a
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and t2.a='1' AND t1.a=t3.b) > 0;
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a
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2
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DROP TABLE t1,t2,t3;
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|
@ -697,5 +697,20 @@ SELECT a, CONCAT(a,' ',a) AS c FROM t1
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INSTR(REVERSE(CONCAT(a,' ',a))," ")) = a;
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DROP TABLE t1;
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#
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# Bug#17526: WRONG PRINT for TRIM FUNCTION with two arguments
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#
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CREATE TABLE t1 (s varchar(10));
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INSERT INTO t1 VALUES ('yadda'), ('yaddy');
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(s) > 'ab';
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM('y' FROM s) > 'ab';
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(LEADING 'y' FROM s) > 'ab';
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(TRAILING 'y' FROM s) > 'ab';
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EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(BOTH 'y' FROM s) > 'ab';
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DROP TABLE t1;
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--echo End of 4.1 tests
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|
@ -2297,4 +2297,49 @@ INSERT INTO t1 VALUES (10);
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SELECT i='1e+01',i=1e+01, i in (1e+01), i in ('1e+01') FROM t1;
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DROP TABLE t1;
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#
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# Bug #21019: First result of SELECT COUNT(*) different than consecutive runs
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#
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CREATE TABLE t1 (a int, b int);
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INSERT INTO t1 VALUES (1,1), (2,1), (4,10);
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CREATE TABLE t2 (a int PRIMARY KEY, b int, KEY b (b));
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INSERT INTO t2 VALUES (1,NULL), (2,10);
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ALTER TABLE t1 ENABLE KEYS;
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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;
|
||||
EXPLAIN SELECT STRAIGHT_JOIN SQL_NO_CACHE COUNT(*) FROM t2, t1 WHERE t1.b = t2.b OR t2.b IS NULL;
|
||||
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));
|
||||
CREATE TABLE t2 (key2 float default NULL, UNIQUE KEY key2 (key2));
|
||||
INSERT INTO t1 VALUES (0.3762),(0.3845),(0.6158),(0.7941);
|
||||
INSERT INTO t2 VALUES (1.3762),(1.3845),(1.6158),(1.7941);
|
||||
|
||||
explain select max(key1) from t1 where key1 <= 0.6158;
|
||||
explain select max(key2) from t2 where key2 <= 1.6158;
|
||||
explain select min(key1) from t1 where key1 >= 0.3762;
|
||||
explain select min(key2) from t2 where key2 >= 1.3762;
|
||||
explain select max(key1), min(key2) from t1, t2
|
||||
where key1 <= 0.6158 and key2 >= 1.3762;
|
||||
explain select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5;
|
||||
explain select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5;
|
||||
|
||||
select max(key1) from t1 where key1 <= 0.6158;
|
||||
select max(key2) from t2 where key2 <= 1.6158;
|
||||
select min(key1) from t1 where key1 >= 0.3762;
|
||||
select min(key2) from t2 where key2 >= 1.3762;
|
||||
select max(key1), min(key2) from t1, t2
|
||||
where key1 <= 0.6158 and key2 >= 1.3762;
|
||||
select max(key1) from t1 where key1 <= 0.6158 and rand() + 0.5 >= 0.5;
|
||||
select min(key1) from t1 where key1 >= 0.3762 and rand() + 0.5 >= 0.5;
|
||||
|
||||
DROP TABLE t1,t2;
|
||||
--enable_ps_protocol
|
||||
|
||||
# End of 4.1 tests
|
||||
|
@ -1844,4 +1844,21 @@ select 1 from dual where 2 > any (select 1);
|
||||
select 1 from dual where 2 > all (select 1);
|
||||
select 1 from dual where 1 < any (select 2 from dual);
|
||||
select 1 from dual where 1 < all (select 2 from dual where 1!=1);
|
||||
|
||||
# BUG#20975 Wrong query results for subqueries within NOT
|
||||
create table t1 (s1 char);
|
||||
insert into t1 values (1),(2);
|
||||
|
||||
select * from t1 where (s1 < any (select s1 from t1));
|
||||
select * from t1 where not (s1 < any (select s1 from t1));
|
||||
|
||||
select * from t1 where (s1 < ALL (select s1+1 from t1));
|
||||
select * from t1 where not(s1 < ALL (select s1+1 from t1));
|
||||
|
||||
select * from t1 where (s1+1 = ANY (select s1 from t1));
|
||||
select * from t1 where NOT(s1+1 = ANY (select s1 from t1));
|
||||
|
||||
select * from t1 where (s1 = ALL (select s1/s1 from t1));
|
||||
select * from t1 where NOT(s1 = ALL (select s1/s1 from t1));
|
||||
drop table t1;
|
||||
# End of 4.1 tests
|
||||
|
@ -150,3 +150,21 @@ EXPLAIN SELECT t2.*, t4.DOCTYPENAME, t1.CONTENTSIZE,t1.MIMETYPE FROM t2 INNER JO
|
||||
|
||||
drop table t1, t2, t3, t4;
|
||||
# End of 4.1 tests
|
||||
|
||||
#
|
||||
# Bug #20792: Incorrect results from aggregate subquery
|
||||
#
|
||||
CREATE TABLE t1 (a int(10) , PRIMARY KEY (a)) Engine=InnoDB;
|
||||
INSERT INTO t1 VALUES (1),(2);
|
||||
|
||||
CREATE TABLE t2 (a int(10), PRIMARY KEY (a)) Engine=InnoDB;
|
||||
INSERT INTO t2 VALUES (1);
|
||||
|
||||
CREATE TABLE t3 (a int(10), b int(10), c int(10),
|
||||
PRIMARY KEY (a)) Engine=InnoDB;
|
||||
INSERT INTO t3 VALUES (1,2,1);
|
||||
|
||||
SELECT t1.* FROM t1 WHERE (SELECT COUNT(*) FROM t3,t2 WHERE t3.c=t2.a
|
||||
and t2.a='1' AND t1.a=t3.b) > 0;
|
||||
|
||||
DROP TABLE t1,t2,t3;
|
||||
|
@ -3099,6 +3099,28 @@ Item *Item_cond_or::neg_transformer(THD *thd) /* NOT(a OR b OR ...) -> */
|
||||
}
|
||||
|
||||
|
||||
Item *Item_func_nop_all::neg_transformer(THD *thd)
|
||||
{
|
||||
/* "NOT (e $cmp$ ANY (SELECT ...)) -> e $rev_cmp$" ALL (SELECT ...) */
|
||||
Item_func_not_all *new_item= new Item_func_not_all(args[0]);
|
||||
Item_allany_subselect *allany= (Item_allany_subselect*)args[0];
|
||||
allany->func= allany->func_creator(FALSE);
|
||||
allany->all= !allany->all;
|
||||
allany->upper_item= new_item;
|
||||
return new_item;
|
||||
}
|
||||
|
||||
Item *Item_func_not_all::neg_transformer(THD *thd)
|
||||
{
|
||||
/* "NOT (e $cmp$ ALL (SELECT ...)) -> e $rev_cmp$" ANY (SELECT ...) */
|
||||
Item_func_nop_all *new_item= new Item_func_nop_all(args[0]);
|
||||
Item_allany_subselect *allany= (Item_allany_subselect*)args[0];
|
||||
allany->all= !allany->all;
|
||||
allany->func= allany->func_creator(TRUE);
|
||||
allany->upper_item= new_item;
|
||||
return new_item;
|
||||
}
|
||||
|
||||
Item *Item_func_eq::negated_item() /* a = b -> a != b */
|
||||
{
|
||||
return new Item_func_ne(args[0], args[1]);
|
||||
|
@ -268,6 +268,7 @@ public:
|
||||
void set_sum_test(Item_sum_hybrid *item) { test_sum_item= item; };
|
||||
void set_sub_test(Item_maxmin_subselect *item) { test_sub_item= item; };
|
||||
bool empty_underlying_subquery();
|
||||
Item *neg_transformer(THD *thd);
|
||||
};
|
||||
|
||||
|
||||
@ -278,6 +279,7 @@ public:
|
||||
Item_func_nop_all(Item *a) :Item_func_not_all(a) {}
|
||||
longlong val_int();
|
||||
const char *func_name() const { return "<nop>"; }
|
||||
Item *neg_transformer(THD *thd);
|
||||
};
|
||||
|
||||
|
||||
|
@ -1444,6 +1444,23 @@ void Item_func_trim::fix_length_and_dec()
|
||||
}
|
||||
}
|
||||
|
||||
void Item_func_trim::print(String *str)
|
||||
{
|
||||
if (arg_count == 1)
|
||||
{
|
||||
Item_func::print(str);
|
||||
return;
|
||||
}
|
||||
str->append(Item_func_trim::func_name());
|
||||
str->append('(');
|
||||
str->append(mode_name());
|
||||
str->append(' ');
|
||||
args[1]->print(str);
|
||||
str->append(" from ",6);
|
||||
args[0]->print(str);
|
||||
str->append(')');
|
||||
}
|
||||
|
||||
|
||||
/* Item_func_password */
|
||||
|
||||
|
@ -218,6 +218,8 @@ public:
|
||||
String *val_str(String *);
|
||||
void fix_length_and_dec();
|
||||
const char *func_name() const { return "trim"; }
|
||||
void print(String *str);
|
||||
virtual const char *mode_name() const { return "both"; }
|
||||
};
|
||||
|
||||
|
||||
@ -228,6 +230,7 @@ public:
|
||||
Item_func_ltrim(Item *a) :Item_func_trim(a) {}
|
||||
String *val_str(String *);
|
||||
const char *func_name() const { return "ltrim"; }
|
||||
const char *mode_name() const { return "leading"; }
|
||||
};
|
||||
|
||||
|
||||
@ -238,6 +241,7 @@ public:
|
||||
Item_func_rtrim(Item *a) :Item_func_trim(a) {}
|
||||
String *val_str(String *);
|
||||
const char *func_name() const { return "rtrim"; }
|
||||
const char *mode_name() const { return "trailing"; }
|
||||
};
|
||||
|
||||
|
||||
|
@ -542,14 +542,14 @@ Item_in_subselect::Item_in_subselect(Item * left_exp,
|
||||
}
|
||||
|
||||
Item_allany_subselect::Item_allany_subselect(Item * left_exp,
|
||||
Comp_creator *fn,
|
||||
chooser_compare_func_creator fc,
|
||||
st_select_lex *select_lex,
|
||||
bool all_arg)
|
||||
:Item_in_subselect(), all(all_arg)
|
||||
:Item_in_subselect(), all(all_arg), func_creator(fc)
|
||||
{
|
||||
DBUG_ENTER("Item_in_subselect::Item_in_subselect");
|
||||
left_expr= left_exp;
|
||||
func= fn;
|
||||
func= func_creator(all_arg);
|
||||
init(select_lex, new select_exists_subselect(this));
|
||||
max_columns= 1;
|
||||
abort_on_null= 0;
|
||||
|
@ -251,14 +251,13 @@ public:
|
||||
/* ALL/ANY/SOME subselect */
|
||||
class Item_allany_subselect :public Item_in_subselect
|
||||
{
|
||||
protected:
|
||||
Comp_creator *func;
|
||||
|
||||
public:
|
||||
chooser_compare_func_creator func_creator;
|
||||
Comp_creator *func;
|
||||
bool all;
|
||||
|
||||
Item_allany_subselect(Item * left_expr, Comp_creator *f,
|
||||
st_select_lex *select_lex, bool all);
|
||||
Item_allany_subselect(Item * left_expr, chooser_compare_func_creator fc,
|
||||
st_select_lex *select_lex, bool all);
|
||||
|
||||
// only ALL subquery has upper not
|
||||
subs_type substype() { return all?ALL_SUBS:ANY_SUBS; }
|
||||
|
@ -387,8 +387,9 @@ enum enum_var_type
|
||||
OPT_DEFAULT, OPT_SESSION, OPT_GLOBAL
|
||||
};
|
||||
class sys_var;
|
||||
#include "item.h"
|
||||
class Comp_creator;
|
||||
typedef Comp_creator* (*chooser_compare_func_creator)(bool invert);
|
||||
#include "item.h"
|
||||
/* sql_parse.cc */
|
||||
void free_items(Item *item);
|
||||
void cleanup_items(Item *item);
|
||||
|
@ -5442,7 +5442,7 @@ Item * all_any_subquery_creator(Item *left_expr,
|
||||
return new Item_func_not(new Item_in_subselect(left_expr, select_lex));
|
||||
|
||||
Item_allany_subselect *it=
|
||||
new Item_allany_subselect(left_expr, (*cmp)(all), select_lex, all);
|
||||
new Item_allany_subselect(left_expr, cmp, select_lex, all);
|
||||
if (all)
|
||||
return it->upper_item= new Item_func_not_all(it); /* ALL */
|
||||
|
||||
|
@ -547,6 +547,24 @@ JOIN::optimize()
|
||||
}
|
||||
zero_result_cause= "Select tables optimized away";
|
||||
tables_list= 0; // All tables resolved
|
||||
/*
|
||||
Extract all table-independent conditions and replace the WHERE
|
||||
clause with them. All other conditions were computed by opt_sum_query
|
||||
and the MIN/MAX/COUNT function(s) have been replaced by constants,
|
||||
so there is no need to compute the whole WHERE clause again.
|
||||
Notice that make_cond_for_table() will always succeed to remove all
|
||||
computed conditions, because opt_sum_query() is applicable only to
|
||||
conjunctions.
|
||||
*/
|
||||
if (conds)
|
||||
{
|
||||
COND *table_independent_conds=
|
||||
make_cond_for_table(conds, PSEUDO_TABLE_BITS, 0);
|
||||
DBUG_EXECUTE("where",
|
||||
print_where(table_independent_conds,
|
||||
"where after opt_sum_query()"););
|
||||
conds= table_independent_conds;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (!tables_list)
|
||||
@ -2143,8 +2161,11 @@ merge_key_fields(KEY_FIELD *start,KEY_FIELD *new_fields,KEY_FIELD *end,
|
||||
/* field = expression OR field IS NULL */
|
||||
old->level= and_level;
|
||||
old->optimize= KEY_OPTIMIZE_REF_OR_NULL;
|
||||
/* Remember the NOT NULL value */
|
||||
if (old->val->is_null())
|
||||
/*
|
||||
Remember the NOT NULL value unless the value does not depend
|
||||
on other tables.
|
||||
*/
|
||||
if (!old->val->used_tables() && old->val->is_null())
|
||||
old->val= new_fields->val;
|
||||
/* The referred expression can be NULL: */
|
||||
old->null_rejecting= 0;
|
||||
@ -4452,10 +4473,16 @@ return_zero_rows(JOIN *join, select_result *result,TABLE_LIST *tables,
|
||||
DBUG_RETURN(0);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
used only in JOIN::clear
|
||||
*/
|
||||
static void clear_tables(JOIN *join)
|
||||
{
|
||||
for (uint i=0 ; i < join->tables ; i++)
|
||||
/*
|
||||
must clear only the non-const tables, as const tables
|
||||
are not re-calculated.
|
||||
*/
|
||||
for (uint i=join->const_tables ; i < join->tables ; i++)
|
||||
mark_as_null_row(join->table[i]); // All fields are NULL
|
||||
}
|
||||
|
||||
|
Reference in New Issue
Block a user