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196 lines
4.2 KiB
Plaintext
196 lines
4.2 KiB
Plaintext
drop table if exists t1;
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select 1 in (1,2,3);
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1 in (1,2,3)
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1
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select 10 in (1,2,3);
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10 in (1,2,3)
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0
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select NULL in (1,2,3);
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NULL in (1,2,3)
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NULL
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select 1 in (1,NULL,3);
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1 in (1,NULL,3)
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1
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select 3 in (1,NULL,3);
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3 in (1,NULL,3)
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1
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select 10 in (1,NULL,3);
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10 in (1,NULL,3)
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NULL
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select 1.5 in (1.5,2.5,3.5);
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1.5 in (1.5,2.5,3.5)
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1
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select 10.5 in (1.5,2.5,3.5);
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10.5 in (1.5,2.5,3.5)
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0
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select NULL in (1.5,2.5,3.5);
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NULL in (1.5,2.5,3.5)
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NULL
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select 1.5 in (1.5,NULL,3.5);
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1.5 in (1.5,NULL,3.5)
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1
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select 3.5 in (1.5,NULL,3.5);
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3.5 in (1.5,NULL,3.5)
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1
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select 10.5 in (1.5,NULL,3.5);
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10.5 in (1.5,NULL,3.5)
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NULL
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CREATE TABLE t1 (a int, b int, c int);
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insert into t1 values (1,2,3), (1,NULL,3);
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select 1 in (a,b,c) from t1;
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1 in (a,b,c)
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1
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1
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select 3 in (a,b,c) from t1;
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3 in (a,b,c)
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1
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1
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select 10 in (a,b,c) from t1;
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10 in (a,b,c)
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0
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NULL
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select NULL in (a,b,c) from t1;
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NULL in (a,b,c)
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NULL
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NULL
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drop table t1;
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CREATE TABLE t1 (a float, b float, c float);
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insert into t1 values (1.5,2.5,3.5), (1.5,NULL,3.5);
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select 1.5 in (a,b,c) from t1;
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1.5 in (a,b,c)
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1
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1
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select 3.5 in (a,b,c) from t1;
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3.5 in (a,b,c)
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1
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1
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select 10.5 in (a,b,c) from t1;
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10.5 in (a,b,c)
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0
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NULL
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drop table t1;
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CREATE TABLE t1 (a varchar(10), b varchar(10), c varchar(10));
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insert into t1 values ('A','BC','EFD'), ('A',NULL,'EFD');
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select 'A' in (a,b,c) from t1;
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'A' in (a,b,c)
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1
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1
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select 'EFD' in (a,b,c) from t1;
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'EFD' in (a,b,c)
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1
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1
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select 'XSFGGHF' in (a,b,c) from t1;
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'XSFGGHF' in (a,b,c)
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0
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NULL
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drop table t1;
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CREATE TABLE t1 (field char(1));
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INSERT INTO t1 VALUES ('A'),(NULL);
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SELECT * from t1 WHERE field IN (NULL);
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field
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SELECT * from t1 WHERE field NOT IN (NULL);
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field
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SELECT * from t1 where field = field;
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field
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A
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SELECT * from t1 where field <=> field;
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field
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A
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NULL
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DELETE FROM t1 WHERE field NOT IN (NULL);
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SELECT * FROM t1;
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field
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A
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NULL
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drop table t1;
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create table t1 (id int(10) primary key);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
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select * from t1 where id in (2,5,9);
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id
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2
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5
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9
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drop table t1;
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create table t1 (
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a char(1) character set latin1 collate latin1_general_ci,
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b char(1) character set latin1 collate latin1_swedish_ci,
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c char(1) character set latin1 collate latin1_danish_ci
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);
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insert into t1 values ('A','B','C');
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insert into t1 values ('a','c','c');
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select * from t1 where a in (b);
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ERROR HY000: Illegal mix of collations (latin1_general_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation ' IN '
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select * from t1 where a in (b,c);
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ERROR HY000: Illegal mix of collations (latin1_general_ci,IMPLICIT), (latin1_swedish_ci,IMPLICIT), (latin1_danish_ci,IMPLICIT) for operation ' IN '
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select * from t1 where 'a' in (a,b,c);
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ERROR HY000: Illegal mix of collations for operation ' IN '
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select * from t1 where 'a' in (a);
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a b c
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A B C
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a c c
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select * from t1 where a in ('a');
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a b c
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A B C
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a c c
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select * from t1 where 'a' collate latin1_general_ci in (a,b,c);
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a b c
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A B C
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a c c
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select * from t1 where 'a' collate latin1_bin in (a,b,c);
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a b c
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a c c
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select * from t1 where 'a' in (a,b,c collate latin1_bin);
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a b c
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a c c
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explain extended select * from t1 where 'a' in (a,b,c collate latin1_bin);
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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`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (_latin1'a' in (`test`.`t1`.`a`,`test`.`t1`.`b`,(`test`.`t1`.`c` collate latin1_bin)))
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drop table t1;
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set names utf8;
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create table t1 (a char(10) character set utf8 not null);
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insert into t1 values ('bbbb'),(_koi8r'<27><><EFBFBD><EFBFBD>'),(_latin1'<27><><EFBFBD><EFBFBD>');
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select a from t1 where a in ('bbbb',_koi8r'<27><><EFBFBD><EFBFBD>',_latin1'<27><><EFBFBD><EFBFBD>') order by a;
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a
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ÄÄÄÄ
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bbbb
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цццц
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drop table t1;
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create table t1 (a char(10) character set latin1 not null);
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insert into t1 values ('a'),('b'),('c');
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select a from t1 where a IN ('a','b','c') order by a;
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a
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a
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b
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c
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drop table t1;
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set names latin1;
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select '1.0' in (1,2);
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'1.0' in (1,2)
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1
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select 1 in ('1.0',2);
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1 in ('1.0',2)
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1
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select 1 in (1,'2.0');
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1 in (1,'2.0')
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1
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select 1 in ('1.0',2.0);
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1 in ('1.0',2.0)
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1
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select 1 in (1.0,'2.0');
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1 in (1.0,'2.0')
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1
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select 1 in ('1.1',2);
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1 in ('1.1',2)
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0
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select 1 in ('1.1',2.0);
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1 in ('1.1',2.0)
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0
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create table t1 (a char(20) character set binary);
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insert into t1 values ('aa'), ('bb');
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select * from t1 where a in (NULL, 'aa');
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a
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aa
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drop table t1;
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