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1f6ecc0cd3
Cleaned up test; Removed wrong DROP TABLE commands and use standard table and database names. changed store_warning() -> push_warning_print()
73 lines
2.2 KiB
Text
73 lines
2.2 KiB
Text
DROP TABLE IF EXISTS t1;
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SELECT IF(NULL AND 1, 1, 2), IF(1 AND NULL, 1, 2);
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IF(NULL AND 1, 1, 2) IF(1 AND NULL, 1, 2)
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2 2
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SELECT NULL AND 1, 1 AND NULL, 0 AND NULL, NULL and 0;
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NULL AND 1 1 AND NULL 0 AND NULL NULL and 0
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NULL NULL 0 0
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create table t1 (a int);
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insert into t1 values (0),(1),(NULL);
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SELECT * FROM t1 WHERE IF(a AND 1, 0, 1);
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a
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0
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NULL
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SELECT * FROM t1 WHERE IF(1 AND a, 0, 1);
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a
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0
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NULL
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SELECT * FROM t1 where NOT(a AND 1);
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a
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0
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SELECT * FROM t1 where NOT(1 AND a);
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a
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0
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SELECT * FROM t1 where (a AND 1)=0;
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a
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0
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SELECT * FROM t1 where (1 AND a)=0;
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a
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0
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SELECT * FROM t1 where (1 AND a)=1;
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a
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1
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SELECT * FROM t1 where (1 AND a) IS NULL;
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a
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NULL
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SET @a=0, @b=0;
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SELECT * FROM t1 WHERE NULL AND (@a:=@a+1);
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a
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SELECT * FROM t1 WHERE NOT(a>=0 AND NULL AND (@b:=@b+1));
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a
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SELECT * FROM t1 WHERE a=2 OR (NULL AND (@a:=@a+1));
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a
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SELECT * FROM t1 WHERE NOT(a=2 OR (NULL AND (@b:=@b+1)));
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a
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SELECT @a, @b;
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@a @b
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0 6
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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(null, null), (0, null), (1, null), (null, 0), (null, 1), (0, 0), (0, 1), (1, 0), (1, 1);
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select ifnull(A, 'N') as A, ifnull(B, 'N') as B, ifnull(not A, 'N') as nA, ifnull(not B, 'N') as nB, ifnull(A and B, 'N') as AB, ifnull(not (A and B), 'N') as `n(AB)`, ifnull((not A or not B), 'N') as nAonB, ifnull(A or B, 'N') as AoB, ifnull(not(A or B), 'N') as `n(AoB)`, ifnull(not A and not B, 'N') as nAnB from t1;
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A B nA nB AB n(AB) nAonB AoB n(AoB) nAnB
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N N N N N N N N N N
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0 N 1 N 0 1 1 N N N
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1 N 0 N N N N 1 0 0
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N 0 N 1 0 1 1 N N N
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N 1 N 0 N N N 1 0 0
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0 0 1 1 0 1 1 0 1 1
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0 1 1 0 0 1 1 1 0 0
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1 0 0 1 0 1 1 1 0 0
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1 1 0 0 1 0 0 1 0 0
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select ifnull(A=1, 'N') as A, ifnull(B=1, 'N') as B, ifnull(not (A=1), 'N') as nA, ifnull(not (B=1), 'N') as nB, ifnull((A=1) and (B=1), 'N') as AB, ifnull(not ((A=1) and (B=1)), 'N') as `n(AB)`, ifnull((not (A=1) or not (B=1)), 'N') as nAonB, ifnull((A=1) or (B=1), 'N') as AoB, ifnull(not((A=1) or (B=1)), 'N') as `n(AoB)`, ifnull(not (A=1) and not (B=1), 'N') as nAnB from t1;
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A B nA nB AB n(AB) nAonB AoB n(AoB) nAnB
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N N N N N N N N N N
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0 N 1 N 0 1 1 N N N
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1 N 0 N N N N 1 0 0
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N 0 N 1 0 1 1 N N N
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N 1 N 0 N N N 1 0 0
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0 0 1 1 0 1 1 0 1 1
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0 1 1 0 0 1 1 1 0 0
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1 0 0 1 0 1 1 1 0 0
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1 1 0 0 1 0 0 1 0 0
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drop table t1;
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