492 lines
16 KiB
Plaintext
492 lines
16 KiB
Plaintext
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drop table if exists t1;
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select (1,2,3) IN ((3,2,3), (1,2,3), (1,3,3));
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(1,2,3) IN ((3,2,3), (1,2,3), (1,3,3))
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1
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select row(10,2,3) IN (row(3,2,3), row(1,2,3), row(1,3,3));
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row(10,2,3) IN (row(3,2,3), row(1,2,3), row(1,3,3))
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0
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select row(1,2,3) IN (row(3,NULL,3), row(1,2,3), row(1,3,3));
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row(1,2,3) IN (row(3,NULL,3), row(1,2,3), row(1,3,3))
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1
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select row(10,2,3) IN (row(3,NULL,3), row(1,2,3), row(1,3,3));
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row(10,2,3) IN (row(3,NULL,3), row(1,2,3), row(1,3,3))
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0
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select row('a',1.5,3) IN (row(1,2,3), row('a',1.5,3), row('a','a','a'));
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row('a',1.5,3) IN (row(1,2,3), row('a',1.5,3), row('a','a','a'))
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1
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Warnings:
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Warning 1292 Truncated incorrect DECIMAL value: 'a'
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Warning 1292 Truncated incorrect INTEGER value: 'a'
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select row('a',0,3) IN (row(3,2,3), row('a','a','3'), row(1,3,3));
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row('a',0,3) IN (row(3,2,3), row('a','a','3'), row(1,3,3))
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1
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Warnings:
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Warning 1292 Truncated incorrect INTEGER value: 'a'
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select row('a',0,3) IN (row(3,2,3), row('a','0','3'), row(1,3,3));
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row('a',0,3) IN (row(3,2,3), row('a','0','3'), row(1,3,3))
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1
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select row('a',1.5,3) IN (row(3,NULL,3), row('a',1.5,3), row(1,3,3));
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row('a',1.5,3) IN (row(3,NULL,3), row('a',1.5,3), row(1,3,3))
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1
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select row('b',1.5,3) IN (row(3,NULL,3), row('a',1.5,3), row(1,3,3));
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row('b',1.5,3) IN (row(3,NULL,3), row('a',1.5,3), row(1,3,3))
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0
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select row('b',1.5,3) IN (row('b',NULL,3), row('a',1.5,3), row(1,3,3));
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row('b',1.5,3) IN (row('b',NULL,3), row('a',1.5,3), row(1,3,3))
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NULL
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select row('b',1.5,3) IN (row('b',NULL,4), row('a',1.5,3), row(1,3,3));
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row('b',1.5,3) IN (row('b',NULL,4), row('a',1.5,3), row(1,3,3))
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0
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select (1,2,(3,4)) IN ((3,2,(3,4)), (1,2,(3,4)));
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(1,2,(3,4)) IN ((3,2,(3,4)), (1,2,(3,4)))
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1
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select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,4));
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ERROR 21000: Operand should contain 2 column(s)
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select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));
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row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)))
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NULL
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explain extended select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 select ((1,2,(3,4)) in ((3,2,(3,4)),(1,2,(3,NULL)))) AS `row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)))`
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SELECT (1,2,3)=(0,NULL,3);
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(1,2,3)=(0,NULL,3)
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0
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SELECT (1,2,3)=(1,NULL,3);
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(1,2,3)=(1,NULL,3)
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NULL
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SELECT (1,2,3)=(1,NULL,0);
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(1,2,3)=(1,NULL,0)
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0
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SELECT ROW(1,2,3)=ROW(1,2,3);
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ROW(1,2,3)=ROW(1,2,3)
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1
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SELECT ROW(2,2,3)=ROW(1+1,2,3);
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ROW(2,2,3)=ROW(1+1,2,3)
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1
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SELECT ROW(1,2,3)=ROW(1+1,2,3);
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ROW(1,2,3)=ROW(1+1,2,3)
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0
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SELECT ROW(1,2,3)<ROW(1+1,2,3);
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ROW(1,2,3)<ROW(1+1,2,3)
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1
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SELECT ROW(1,2,3)>ROW(1+1,2,3);
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ROW(1,2,3)>ROW(1+1,2,3)
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0
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SELECT ROW(1,2,3)<=ROW(1+1,2,3);
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ROW(1,2,3)<=ROW(1+1,2,3)
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1
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SELECT ROW(1,2,3)>=ROW(1+1,2,3);
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ROW(1,2,3)>=ROW(1+1,2,3)
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0
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SELECT ROW(1,2,3)<>ROW(1+1,2,3);
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ROW(1,2,3)<>ROW(1+1,2,3)
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1
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SELECT ROW(NULL,2,3)=ROW(NULL,2,3);
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ROW(NULL,2,3)=ROW(NULL,2,3)
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NULL
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SELECT ROW(NULL,2,3)<=>ROW(NULL,2,3);
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ROW(NULL,2,3)<=>ROW(NULL,2,3)
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1
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SELECT ROW(1,2,ROW(3,4,5))=ROW(1,2,ROW(3,4,5));
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ROW(1,2,ROW(3,4,5))=ROW(1,2,ROW(3,4,5))
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1
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SELECT ROW('test',2,3.33)=ROW('test',2,3.33);
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ROW('test',2,3.33)=ROW('test',2,3.33)
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1
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SELECT ROW('test',2,3.33)=ROW('test',2,3.33,4);
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ERROR 21000: Operand should contain 3 column(s)
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SELECT ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,33));
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ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,33))
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1
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SELECT ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,3));
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ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,3))
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0
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SELECT ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,NULL));
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ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,NULL))
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NULL
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SELECT ROW('test',2,ROW(3,33))=ROW('test',2,4);
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ERROR 21000: Operand should contain 2 column(s)
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create table t1 ( a int, b int, c int);
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insert into t1 values (1,2,3), (2,3,1), (3,2,1), (1,2,NULL);
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select * from t1 where ROW(1,2,3)=ROW(a,b,c);
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a b c
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1 2 3
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select * from t1 where ROW(0,2,3)=ROW(a,b,c);
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a b c
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select * from t1 where ROW(1,2,3)<ROW(a,b,c);
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a b c
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2 3 1
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3 2 1
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select ROW(a,2,3) IN(row(1,b,c), row(2,3,1)) from t1;
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ROW(a,2,3) IN(row(1,b,c), row(2,3,1))
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1
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0
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0
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NULL
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select ROW(c,2,3) IN(row(1,b,a), row(2,3,1)) from t1;
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ROW(c,2,3) IN(row(1,b,a), row(2,3,1))
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0
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0
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1
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NULL
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select ROW(a,b,c) IN(row(1,2,3), row(3,2,1)) from t1;
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ROW(a,b,c) IN(row(1,2,3), row(3,2,1))
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1
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0
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1
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NULL
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select ROW(1,2,3) IN(row(a,b,c), row(1,2,3)) from t1;
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ROW(1,2,3) IN(row(a,b,c), row(1,2,3))
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1
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1
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1
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1
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drop table t1;
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select ROW(1,1);
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ERROR 21000: Operand should contain 1 column(s)
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create table t1 (i int);
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select 1 from t1 where ROW(1,1);
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ERROR 21000: Operand should contain 1 column(s)
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select count(*) from t1 order by ROW(1,1);
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ERROR 21000: Operand should contain 1 column(s)
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select count(*) from t1 having (1,1) order by i;
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ERROR 21000: Operand should contain 1 column(s)
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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, 4);
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insert into t1 values (10, 40);
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insert into t1 values (1, 4);
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insert into t1 values (10, 43);
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insert into t1 values (1, 4);
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insert into t1 values (10, 41);
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insert into t1 values (1, 4);
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insert into t1 values (10, 43);
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insert into t1 values (1, 4);
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select a, MAX(b), (1, MAX(b)) = (1, 4) from t1 group by a;
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a MAX(b) (1, MAX(b)) = (1, 4)
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1 4 1
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10 43 0
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drop table t1;
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SELECT ROW(2,10) <=> ROW(3,4);
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ROW(2,10) <=> ROW(3,4)
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0
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SELECT ROW(NULL,10) <=> ROW(3,NULL);
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ROW(NULL,10) <=> ROW(3,NULL)
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0
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SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),ROW(1,1));
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ERROR 21000: Operand should contain 2 column(s)
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SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),ROW(1,1),ROW(1,ROW(2,3)));
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ERROR 21000: Operand should contain 2 column(s)
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SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),ROW(1,ROW(2,2,2)));
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ERROR 21000: Operand should contain 2 column(s)
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SELECT ROW(1,ROW(2,3,4)) IN (ROW(1,ROW(2,3,4)),ROW(1,ROW(2,2)));
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ERROR 21000: Operand should contain 3 column(s)
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SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),(SELECT 1,1));
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ERROR 21000: Operand should contain 2 column(s)
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SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),(SELECT 1,1),ROW(1,ROW(2,4)));
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ERROR 21000: Operand should contain 2 column(s)
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SELECT ROW(1,ROW(2,3)) IN ((SELECT 1,1),ROW(1,ROW(2,3)));
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ERROR 21000: Operand should contain 2 column(s)
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SELECT ROW(2,1) IN (ROW(21,2),ROW(ROW(1,1,3),0));
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ERROR 21000: Operand should contain 1 column(s)
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SELECT ROW(2,1) IN (ROW(ROW(1,1,3),0),ROW(21,2));
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ERROR 21000: Operand should contain 1 column(s)
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CREATE TABLE t1(a int, b int, c int);
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INSERT INTO t1 VALUES (1, 2, 3),
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(NULL, 2, 3 ), (1, NULL, 3 ), (1, 2, NULL),
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(NULL, 2, 3+1), (1, NULL, 3+1), (1, 2+1, NULL),
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(NULL, 2, 3-1), (1, NULL, 3-1), (1, 2-1, NULL);
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SELECT (1,2,3) = (1, NULL, 3);
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(1,2,3) = (1, NULL, 3)
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NULL
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SELECT (1,2,3) = (1+1, NULL, 3);
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(1,2,3) = (1+1, NULL, 3)
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0
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SELECT (1,2,3) = (1, NULL, 3+1);
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(1,2,3) = (1, NULL, 3+1)
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0
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SELECT * FROM t1 WHERE (a,b,c) = (1,2,3);
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a b c
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1 2 3
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SELECT (1,2,3) <> (1, NULL, 3);
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(1,2,3) <> (1, NULL, 3)
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NULL
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SELECT (1,2,3) <> (1+1, NULL, 3);
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(1,2,3) <> (1+1, NULL, 3)
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1
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SELECT (1,2,3) <> (1, NULL, 3+1);
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(1,2,3) <> (1, NULL, 3+1)
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1
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SELECT * FROM t1 WHERE (a,b,c) <> (1,2,3);
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a b c
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NULL 2 4
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1 NULL 4
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1 3 NULL
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NULL 2 2
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1 NULL 2
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1 1 NULL
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SELECT (1,2,3) < (NULL, 2, 3);
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(1,2,3) < (NULL, 2, 3)
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NULL
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SELECT (1,2,3) < (1, NULL, 3);
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(1,2,3) < (1, NULL, 3)
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NULL
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SELECT (1,2,3) < (1-1, NULL, 3);
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(1,2,3) < (1-1, NULL, 3)
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0
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SELECT (1,2,3) < (1+1, NULL, 3);
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(1,2,3) < (1+1, NULL, 3)
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1
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SELECT * FROM t1 WHERE (a,b,c) < (1,2,3);
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a b c
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1 1 NULL
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SELECT (1,2,3) <= (NULL, 2, 3);
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(1,2,3) <= (NULL, 2, 3)
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NULL
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SELECT (1,2,3) <= (1, NULL, 3);
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(1,2,3) <= (1, NULL, 3)
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NULL
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SELECT (1,2,3) <= (1-1, NULL, 3);
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(1,2,3) <= (1-1, NULL, 3)
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0
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SELECT (1,2,3) <= (1+1, NULL, 3);
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(1,2,3) <= (1+1, NULL, 3)
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1
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SELECT * FROM t1 WHERE (a,b,c) <= (1,2,3);
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a b c
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1 2 3
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1 1 NULL
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SELECT (1,2,3) > (NULL, 2, 3);
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(1,2,3) > (NULL, 2, 3)
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NULL
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SELECT (1,2,3) > (1, NULL, 3);
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(1,2,3) > (1, NULL, 3)
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NULL
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SELECT (1,2,3) > (1-1, NULL, 3);
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(1,2,3) > (1-1, NULL, 3)
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1
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SELECT (1,2,3) > (1+1, NULL, 3);
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(1,2,3) > (1+1, NULL, 3)
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0
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SELECT * FROM t1 WHERE (a,b,c) > (1,2,3);
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a b c
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1 3 NULL
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SELECT (1,2,3) >= (NULL, 2, 3);
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(1,2,3) >= (NULL, 2, 3)
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NULL
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SELECT (1,2,3) >= (1, NULL, 3);
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(1,2,3) >= (1, NULL, 3)
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NULL
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SELECT (1,2,3) >= (1-1, NULL, 3);
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(1,2,3) >= (1-1, NULL, 3)
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1
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SELECT (1,2,3) >= (1+1, NULL, 3);
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(1,2,3) >= (1+1, NULL, 3)
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0
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SELECT * FROM t1 WHERE (a,b,c) >= (1,2,3);
|
||
|
|
a b c
|
||
|
|
1 2 3
|
||
|
|
1 3 NULL
|
||
|
|
DROP TABLE t1;
|
||
|
|
SELECT ROW(1,1,1) = ROW(1,1,1) as `1`, ROW(1,1,1) = ROW(1,2,1) as `0`, ROW(1,NULL,1) = ROW(2,2,1) as `0`, ROW(1,NULL,1) = ROW(1,2,2) as `0`, ROW(1,NULL,1) = ROW(1,2,1) as `null` ;
|
||
|
|
1 0 0 0 null
|
||
|
|
1 0 0 0 NULL
|
||
|
|
select row(NULL,1)=(2,0);
|
||
|
|
row(NULL,1)=(2,0)
|
||
|
|
0
|
||
|
|
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a,b));
|
||
|
|
INSERT INTO t1 VALUES (1,1), (2,1), (3,1), (1,2), (3,2), (3,3);
|
||
|
|
EXPLAIN SELECT * FROM t1 WHERE a=3 AND b=2;
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 const PRIMARY PRIMARY 8 const,const 1 Using index
|
||
|
|
EXPLAIN SELECT * FROM t1 WHERE (a,b)=(3,2);
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 const PRIMARY PRIMARY 8 const,const 1 Using index
|
||
|
|
SELECT * FROM t1 WHERE a=3 and b=2;
|
||
|
|
a b
|
||
|
|
3 2
|
||
|
|
SELECT * FROM t1 WHERE (a,b)=(3,2);
|
||
|
|
a b
|
||
|
|
3 2
|
||
|
|
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a,b,c));
|
||
|
|
INSERT INTO t2 VALUES
|
||
|
|
(1,1,2), (3,1,3), (1,2,2), (4,4,2),
|
||
|
|
(1,1,1), (3,1,1), (1,2,1);
|
||
|
|
EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b=t2.b;
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 Using index
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a,test.t1.b 1 Using index
|
||
|
|
EXPLAIN SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b);
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 Using index
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a,test.t1.b 1 Using index
|
||
|
|
SELECT * FROM t1,t2 WHERE t1.a=t2.a and t1.b=t2.b;
|
||
|
|
a b a b c
|
||
|
|
1 1 1 1 1
|
||
|
|
1 1 1 1 2
|
||
|
|
1 2 1 2 1
|
||
|
|
1 2 1 2 2
|
||
|
|
3 1 3 1 1
|
||
|
|
3 1 3 1 3
|
||
|
|
SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b);
|
||
|
|
a b a b c
|
||
|
|
1 1 1 1 1
|
||
|
|
1 1 1 1 2
|
||
|
|
1 2 1 2 1
|
||
|
|
1 2 1 2 2
|
||
|
|
3 1 3 1 1
|
||
|
|
3 1 3 1 3
|
||
|
|
EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b=2;
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 Using where; Using index
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a 1 Using index
|
||
|
|
EXPLAIN SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,2);
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 Using where; Using index
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a 1 Using index
|
||
|
|
SELECT * FROM t1,t2 WHERE t1.a=1 and t1.b=t2.b;
|
||
|
|
a b a b c
|
||
|
|
1 1 1 1 2
|
||
|
|
1 1 3 1 3
|
||
|
|
1 2 1 2 2
|
||
|
|
1 1 1 1 1
|
||
|
|
1 1 3 1 1
|
||
|
|
1 2 1 2 1
|
||
|
|
SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,2);
|
||
|
|
a b a b c
|
||
|
|
1 2 1 1 1
|
||
|
|
1 2 1 1 2
|
||
|
|
1 2 1 2 1
|
||
|
|
1 2 1 2 2
|
||
|
|
3 2 3 1 1
|
||
|
|
3 2 3 1 3
|
||
|
|
EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b+1);
|
||
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 100.00 Using index
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using where; Using index
|
||
|
|
Warnings:
|
||
|
|
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`b` = (`test`.`t2`.`b` + 1)))
|
||
|
|
SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b+1);
|
||
|
|
a b a b c
|
||
|
|
1 2 1 1 1
|
||
|
|
1 2 1 1 2
|
||
|
|
3 2 3 1 1
|
||
|
|
3 2 3 1 3
|
||
|
|
EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t1.a-1,t1.b)=(t2.a-1,t2.b+1);
|
||
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||
|
|
1 SIMPLE t1 index NULL PRIMARY 8 NULL 6 100.00 Using index
|
||
|
|
1 SIMPLE t2 index NULL PRIMARY 12 NULL 7 100.00 Using where; Using index; Using join buffer
|
||
|
|
Warnings:
|
||
|
|
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where (((`test`.`t1`.`a` - 1) = (`test`.`t2`.`a` - 1)) and (`test`.`t1`.`b` = (`test`.`t2`.`b` + 1)))
|
||
|
|
SELECT * FROM t1,t2 WHERE (t1.a-1,t1.b)=(t2.a-1,t2.b+1);
|
||
|
|
a b a b c
|
||
|
|
1 2 1 1 2
|
||
|
|
3 2 3 1 3
|
||
|
|
1 2 1 1 1
|
||
|
|
3 2 3 1 1
|
||
|
|
EXPLAIN SELECT * FROM t2 WHERE a=3 AND b=2;
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 8 const,const 1 Using index
|
||
|
|
EXPLAIN SELECT * FROM t2 WHERE (a,b)=(3,2);
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t2 ref PRIMARY PRIMARY 8 const,const 1 Using index
|
||
|
|
SELECT * FROM t2 WHERE a=3 and b=2;
|
||
|
|
a b c
|
||
|
|
SELECT * FROM t2 WHERE (a,b)=(3,2);
|
||
|
|
a b c
|
||
|
|
EXPLAIN SELECT * FROM t1,t2 WHERE t2.a=t1.a AND t2.b=2 AND t2.c=1;
|
||
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 Using index
|
||
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 12 test.t1.a,const,const 1 Using index
|
||
|
|
EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t2.a,(t2.b,t2.c))=(t1.a,(2,1));
|
||
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 100.00 Using index
|
||
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 12 test.t1.a,const,const 1 100.00 Using index
|
||
|
|
Warnings:
|
||
|
|
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`c` = 1) and (`test`.`t2`.`b` = 2) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
||
|
|
SELECT * FROM t1,t2 WHERE (t2.a,(t2.b,t2.c))=(t1.a,(2,1));
|
||
|
|
a b a b c
|
||
|
|
1 1 1 2 1
|
||
|
|
1 2 1 2 1
|
||
|
|
EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE t2.a=t1.a AND (t2.b,t2.c)=(2,1);
|
||
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 6 100.00 Using index
|
||
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 12 test.t1.a,const,const 1 100.00 Using index
|
||
|
|
Warnings:
|
||
|
|
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`c` = 1) and (`test`.`t2`.`b` = 2) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
||
|
|
SELECT * FROM t1,t2 WHERE t2.a=t1.a AND (t2.b,t2.c)=(2,1);
|
||
|
|
a b a b c
|
||
|
|
1 1 1 2 1
|
||
|
|
1 2 1 2 1
|
||
|
|
DROP TABLE t1,t2;
|
||
|
|
CREATE TABLE t1(
|
||
|
|
a int, b int, c int, d int, e int, f int, g int, h int,
|
||
|
|
PRIMARY KEY (a,b,c,d,e,f,g)
|
||
|
|
);
|
||
|
|
INSERT INTO t1 VALUES (1,2,3,4,5,6,7,99);
|
||
|
|
SELECT h FROM t1 WHERE (a,b,c,d,e,f,g)=(1,2,3,4,5,6,7);
|
||
|
|
h
|
||
|
|
99
|
||
|
|
SET @x:= (SELECT h FROM t1 WHERE (a,b,c,d,e,f,g)=(1,2,3,4,5,6,7));
|
||
|
|
SELECT @x;
|
||
|
|
@x
|
||
|
|
99
|
||
|
|
DROP TABLE t1;
|
||
|
|
CREATE TABLE t1 (a INT, b INT);
|
||
|
|
INSERT INTO t1 VALUES (1,1);
|
||
|
|
SELECT ROW(a, 1) IN (SELECT SUM(b), 1) FROM t1 GROUP BY a;
|
||
|
|
ROW(a, 1) IN (SELECT SUM(b), 1)
|
||
|
|
1
|
||
|
|
SELECT ROW(a, 1) IN (SELECT SUM(b), 3) FROM t1 GROUP BY a;
|
||
|
|
ROW(a, 1) IN (SELECT SUM(b), 3)
|
||
|
|
0
|
||
|
|
DROP TABLE t1;
|
||
|
|
create table t1 (a varchar(200),
|
||
|
|
b int unsigned not null primary key auto_increment)
|
||
|
|
default character set 'utf8';
|
||
|
|
create table t2 (c varchar(200),
|
||
|
|
d int unsigned not null primary key auto_increment)
|
||
|
|
default character set 'latin1';
|
||
|
|
insert into t1 (a) values('abc');
|
||
|
|
insert into t2 (c) values('abc');
|
||
|
|
select * from t1,t2 where (a,b) = (c,d);
|
||
|
|
a b c d
|
||
|
|
abc 1 abc 1
|
||
|
|
select host,user from mysql.user where (host,user) = ('localhost','test');
|
||
|
|
host user
|
||
|
|
drop table t1,t2;
|
||
|
|
#
|
||
|
|
# Bug#52124 memory leaks like a sieve in datetime, timestamp, time, date fields + warnings
|
||
|
|
#
|
||
|
|
CREATE TABLE t1 (a DATETIME NOT NULL, b TINYINT);
|
||
|
|
INSERT INTO t1 VALUES (0, 0),(0, 0);
|
||
|
|
SELECT 1 FROM t1 WHERE ROW(a, b) >=
|
||
|
|
ROW('1', (SELECT 1 FROM t1 WHERE a > 1234));
|
||
|
|
1
|
||
|
|
DROP TABLE t1;
|
||
|
|
#
|
||
|
|
# Bug #54190: Comparison to row subquery produces incorrect result
|
||
|
|
#
|
||
|
|
SELECT ROW(1,2) = (SELECT 1,2 FROM DUAL WHERE 1 = 0);
|
||
|
|
ROW(1,2) = (SELECT 1,2 FROM DUAL WHERE 1 = 0)
|
||
|
|
NULL
|
||
|
|
SELECT ROW(1,2) = (SELECT 1,3 FROM DUAL WHERE 1 = 0);
|
||
|
|
ROW(1,2) = (SELECT 1,3 FROM DUAL WHERE 1 = 0)
|
||
|
|
NULL
|
||
|
|
CREATE TABLE t1 (i INT);
|
||
|
|
INSERT INTO t1 () VALUES (1), (2), (3);
|
||
|
|
SELECT ROW(1,2) = (SELECT 1,2 FROM t1 WHERE 1 = 0);
|
||
|
|
ROW(1,2) = (SELECT 1,2 FROM t1 WHERE 1 = 0)
|
||
|
|
NULL
|
||
|
|
SELECT ROW(1,2) = (SELECT 1,3 FROM t1 WHERE 1 = 0);
|
||
|
|
ROW(1,2) = (SELECT 1,3 FROM t1 WHERE 1 = 0)
|
||
|
|
NULL
|
||
|
|
SELECT i FROM t1 WHERE ROW(1,2) = (SELECT 1,2 FROM DUAL WHERE 1 = 0);
|
||
|
|
i
|
||
|
|
SELECT i FROM t1 WHERE ROW(1,2) = (SELECT 1,3 FROM DUAL WHERE 1 = 0);
|
||
|
|
i
|
||
|
|
DROP TABLE t1;
|
||
|
|
End of 5.1 tests
|