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|
DROP TABLE IF EXISTS t1;
SELECT IF(NULL AND 1, 1, 2), IF(1 AND NULL, 1, 2);
IF(NULL AND 1, 1, 2) IF(1 AND NULL, 1, 2)
2 2
SELECT NULL AND 1, 1 AND NULL, 0 AND NULL, NULL and 0;
NULL AND 1 1 AND NULL 0 AND NULL NULL and 0
NULL NULL 0 0
create table t1 (a int);
insert into t1 values (0),(1),(NULL);
SELECT * FROM t1 WHERE IF(a AND 1, 0, 1);
a
0
NULL
SELECT * FROM t1 WHERE IF(1 AND a, 0, 1);
a
0
NULL
SELECT * FROM t1 where NOT(a AND 1);
a
0
SELECT * FROM t1 where NOT(1 AND a);
a
0
SELECT * FROM t1 where (a AND 1)=0;
a
0
SELECT * FROM t1 where (1 AND a)=0;
a
0
SELECT * FROM t1 where (1 AND a)=1;
a
1
SELECT * FROM t1 where (1 AND a) IS NULL;
a
NULL
set sql_mode='high_not_precedence';
select * from t1 where not a between 2 and 3;
a
set sql_mode=default;
select * from t1 where not a between 2 and 3;
a
0
1
select a, a is false, a is true, a is unknown from t1;
a a is false a is true a is unknown
0 1 0 0
1 0 1 0
NULL 0 0 1
select a, a is not false, a is not true, a is not unknown from t1;
a a is not false a is not true a is not unknown
0 0 1 1
1 1 0 1
NULL 1 1 0
SET @a=0, @b=0;
SELECT * FROM t1 WHERE NULL AND (@a:=@a+1);
a
SELECT * FROM t1 WHERE NOT(a>=0 AND NULL AND (@b:=@b+1));
a
SELECT * FROM t1 WHERE a=2 OR (NULL AND (@a:=@a+1));
a
SELECT * FROM t1 WHERE NOT(a=2 OR (NULL AND (@b:=@b+1)));
a
DROP TABLE t1;
create table t1 (a int, b int);
insert into t1 values(null, null), (0, null), (1, null), (null, 0), (null, 1), (0, 0), (0, 1), (1, 0), (1, 1);
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;
A B nA nB AB n(AB) nAonB AoB n(AoB) nAnB
N N N N N N N N N N
0 N 1 N 0 1 1 N N N
1 N 0 N N N N 1 0 0
N 0 N 1 0 1 1 N N N
N 1 N 0 N N N 1 0 0
0 0 1 1 0 1 1 0 1 1
0 1 1 0 0 1 1 1 0 0
1 0 0 1 0 1 1 1 0 0
1 1 0 0 1 0 0 1 0 0
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;
A B nA nB AB n(AB) nAonB AoB n(AoB) nAnB
N N N N N N N N N N
0 N 1 N 0 1 1 N N N
1 N 0 N N N N 1 0 0
N 0 N 1 0 1 1 N N N
N 1 N 0 N N N 1 0 0
0 0 1 1 0 1 1 0 1 1
0 1 1 0 0 1 1 1 0 0
1 0 0 1 0 1 1 1 0 0
1 1 0 0 1 0 0 1 0 0
drop table t1;
# Start of 10.6 tests
#
# MDEV-34189 Unexpected error on `WHERE inet6col`
#
CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY, a INT, KEY(a));
INSERT INTO t1 VALUES (-1,NULL);
INSERT INTO t1 SELECT seq,seq FROM seq_0_to_31;
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE a;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL a NULL NULL NULL 33 96.97 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is true
SELECT id, a FROM t1 WHERE a;
id a
1 1
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29 29
30 30
31 31
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE NOT a;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 5 NULL 1 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is false
SELECT id, a FROM t1 WHERE NOT a;
id a
0 0
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE a IS TRUE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL a NULL NULL NULL 33 96.97 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is true
SELECT id, a FROM t1 WHERE a IS TRUE;
id a
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31 31
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE NOT a IS TRUE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 5 NULL 2 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is not true
SELECT id, a FROM t1 WHERE NOT a IS TRUE;
id a
-1 NULL
0 0
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE a IS NOT TRUE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 5 NULL 2 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is not true
SELECT id, a FROM t1 WHERE a IS NOT TRUE;
id a
-1 NULL
0 0
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE NOT a IS NOT TRUE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL a NULL NULL NULL 33 96.97 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is true
SELECT id, a FROM t1 WHERE NOT a IS NOT TRUE;
id a
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30 30
31 31
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE a IS FALSE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 5 NULL 1 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is false
SELECT id, a FROM t1 WHERE a IS FALSE;
id a
0 0
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE NOT a IS FALSE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL a NULL NULL NULL 33 96.97 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is not false
SELECT id, a FROM t1 WHERE NOT a IS FALSE;
id a
-1 NULL
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31 31
EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE a IS NOT FALSE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL a NULL NULL NULL 33 96.97 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is not false
SELECT id, a FROM t1 WHERE a IS NOT FALSE;
id a
-1 NULL
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EXPLAIN EXTENDED
SELECT id, a FROM t1 WHERE NOT a IS NOT FALSE;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 5 NULL 1 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` is false
SELECT id, a FROM t1 WHERE NOT a IS NOT FALSE;
id a
0 0
DROP TABLE t1;
# End of 10.6 tests
|
