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Manually merged
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evgen@moonbone.local
@@ -2656,16 +2656,6 @@ t11 MyISAM 10 Dynamic 0 0 X X X X X X X X latin1_swedish_ci NULL
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select 123 as a from t1 where f1 is null;
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a
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drop table t1,t11;
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CREATE TABLE t1 (a INT, b INT);
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(SELECT a, b AS c FROM t1) ORDER BY c+1;
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a c
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(SELECT a, b AS c FROM t1) ORDER BY b+1;
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a c
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SELECT a, b AS c FROM t1 ORDER BY c+1;
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a c
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SELECT a, b AS c FROM t1 ORDER BY b+1;
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a c
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drop table t1;
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CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL, UNIQUE idx (a,b) );
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INSERT INTO t1 VALUES (1,1),(1,2),(1,3),(1,4);
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CREATE TABLE t2 ( a INT NOT NULL, b INT NOT NULL, e INT );
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@@ -2716,71 +2706,20 @@ select * from t1 where f1 in (select f3 from t2 where (f3,f4)= (select f3,f4 fro
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f1 f2
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1 1
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drop table t1,t2;
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CREATE TABLE t1 (a int, INDEX idx(a));
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INSERT INTO t1 VALUES (2), (3), (1);
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EXPLAIN SELECT * FROM t1 IGNORE INDEX (idx);
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CREATE TABLE t1(a int, b int, c int, KEY b(b), KEY c(c));
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insert into t1 values (1,0,0),(2,0,0);
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CREATE TABLE t2 (a int, b varchar(2), c varchar(2), PRIMARY KEY(a));
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insert into t2 values (1,'',''), (2,'','');
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CREATE TABLE t3 (a int, b int, PRIMARY KEY (a,b), KEY a (a), KEY b (b));
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insert into t3 values (1,1),(1,2);
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explain select straight_join DISTINCT t2.a,t2.b, t1.c from t1, t3, t2
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where (t1.c=t2.a or (t1.c=t3.a and t2.a=t3.b)) and t1.b=556476786 and
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t2.b like '%%' order by t2.b limit 0,1;
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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 3
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EXPLAIN SELECT * FROM t1 IGNORE INDEX (a);
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ERROR HY000: Key 'a' doesn't exist in table 't1'
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EXPLAIN SELECT * FROM t1 FORCE INDEX (a);
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ERROR HY000: Key 'a' doesn't exist in table 't1'
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DROP TABLE t1;
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CREATE TABLE t1 ( city char(30) );
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INSERT INTO t1 VALUES ('London');
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INSERT INTO t1 VALUES ('Paris');
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SELECT * FROM t1 WHERE city='London';
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city
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London
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SELECT * FROM t1 WHERE city='london';
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city
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London
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EXPLAIN SELECT * FROM t1 WHERE city='London' AND city='london';
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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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SELECT * FROM t1 WHERE city='London' AND city='london';
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city
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London
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EXPLAIN SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
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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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SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
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city
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London
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DROP TABLE t1;
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create table t1 (a int(11) unsigned, b int(11) unsigned);
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insert into t1 values (1,0), (1,1), (1,2);
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select a-b from t1 order by 1;
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a-b
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0
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1
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18446744073709551615
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select a-b , (a-b < 0) from t1 order by 1;
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a-b (a-b < 0)
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0 0
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1 0
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18446744073709551615 0
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select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0;
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d (a-b >= 0) b
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1 1 0
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0 1 1
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18446744073709551615 1 2
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select cast((a - b) as unsigned) from t1 order by 1;
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cast((a - b) as unsigned)
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0
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1
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18446744073709551615
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drop table t1;
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create table t1 (a int(11));
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select all all * from t1;
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a
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select distinct distinct * from t1;
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a
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select all distinct * from t1;
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ERROR HY000: Incorrect usage of ALL and DISTINCT
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select distinct all * from t1;
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ERROR HY000: Incorrect usage of ALL and DISTINCT
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drop table t1;
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1 SIMPLE t1 ref b,c b 5 const 1 Using where; Using temporary; Using filesort
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1 SIMPLE t3 index PRIMARY,a,b PRIMARY 8 NULL 2 Using index
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1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 2 Range checked for each record (index map: 0x1)
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DROP TABLE t1,t2,t3;
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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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@@ -2814,19 +2753,6 @@ WART 0100 1
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WART 0200 1
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WART 0300 3
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DROP TABLE t1;
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CREATE TABLE t1 ( a BLOB, INDEX (a(20)) );
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CREATE TABLE t2 ( a BLOB, INDEX (a(20)) );
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INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five');
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INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five');
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EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
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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 5
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1 SIMPLE t2 ref a a 23 test.t1.a 2
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EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
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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 5
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1 SIMPLE t2 ref a a 23 test.t1.a 2
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DROP TABLE t1, t2;
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create table t1 (a int, b int);
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create table t2 like t1;
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select t1.a from (t1 inner join t2 on t1.a=t2.a) where t2.a=1;
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@@ -2857,29 +2783,6 @@ x
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NULL
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1.0000
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drop table t1;
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create table t1 (a int(11));
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select all all * from t1;
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a
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select distinct distinct * from t1;
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a
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select all distinct * from t1;
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ERROR HY000: Incorrect usage of ALL and DISTINCT
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select distinct all * from t1;
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ERROR HY000: Incorrect usage of ALL and DISTINCT
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drop table t1;
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CREATE TABLE t1 ( a BLOB, INDEX (a(20)) );
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CREATE TABLE t2 ( a BLOB, INDEX (a(20)) );
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INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five');
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INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five');
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EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
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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 5
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1 SIMPLE t2 ref a a 23 test.t1.a 2
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EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
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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 5
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1 SIMPLE t2 ref a a 23 test.t1.a 2
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DROP TABLE t1, t2;
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CREATE TABLE t1 (a int);
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CREATE TABLE t2 (a int);
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INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
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@@ -3456,3 +3359,23 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using where
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1 SIMPLE t2 ref c c 5 test.t1.a 2 Using where
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DROP TABLE t1, t2;
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create table t1 (
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a int unsigned not null auto_increment primary key,
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b bit not null,
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c bit not null
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);
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create table t2 (
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a int unsigned not null auto_increment primary key,
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b bit not null,
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c int unsigned not null,
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d varchar(50)
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);
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insert into t1 (b,c) values (0,1), (0,1);
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insert into t2 (b,c) values (0,1);
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select t1.a, t1.b + 0, t1.c + 0, t2.a, t2.b + 0, t2.c, t2.d
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from t1 left outer join t2 on t1.a = t2.c and t2.b <> 1
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where t1.b <> 1 order by t1.a;
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a t1.b + 0 t1.c + 0 a t2.b + 0 c d
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1 0 1 1 0 1 NULL
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2 0 1 NULL NULL NULL NULL
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drop table t1,t2;
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