1# 2# Test of boolean operations with NULL 3# 4 5--disable_warnings 6DROP TABLE IF EXISTS t1; 7--enable_warnings 8 9SELECT IF(NULL AND 1, 1, 2), IF(1 AND NULL, 1, 2); 10SELECT NULL AND 1, 1 AND NULL, 0 AND NULL, NULL and 0; 11 12create table t1 (a int); 13insert into t1 values (0),(1),(NULL); 14SELECT * FROM t1 WHERE IF(a AND 1, 0, 1); 15SELECT * FROM t1 WHERE IF(1 AND a, 0, 1); 16SELECT * FROM t1 where NOT(a AND 1); 17SELECT * FROM t1 where NOT(1 AND a); 18SELECT * FROM t1 where (a AND 1)=0; 19SELECT * FROM t1 where (1 AND a)=0; 20SELECT * FROM t1 where (1 AND a)=1; 21SELECT * FROM t1 where (1 AND a) IS NULL; 22 23# WL#638 - Behaviour of NOT does not follow SQL specification 24set sql_mode='high_not_precedence'; 25select * from t1 where not a between 2 and 3; 26set sql_mode=default; 27select * from t1 where not a between 2 and 3; 28 29# SQL boolean tests 30select a, a is false, a is true, a is unknown from t1; 31select a, a is not false, a is not true, a is not unknown from t1; 32 33# Verify that NULL optimisation works in AND clause: 34SET @a=0, @b=0; 35SELECT * FROM t1 WHERE NULL AND (@a:=@a+1); 36SELECT * FROM t1 WHERE NOT(a>=0 AND NULL AND (@b:=@b+1)); 37SELECT * FROM t1 WHERE a=2 OR (NULL AND (@a:=@a+1)); 38SELECT * FROM t1 WHERE NOT(a=2 OR (NULL AND (@b:=@b+1))); 39DROP TABLE t1; 40 41 42# Test boolean operators in select part 43# NULLs are represented as N for readability 44# Read nA as !A, AB as A && B, AoB as A || B 45# Result table makes ANSI happy 46 47create table t1 (a int, b int); 48insert into t1 values(null, null), (0, null), (1, null), (null, 0), (null, 1), (0, 0), (0, 1), (1, 0), (1, 1); 49 50# Below test is valid untill we have True/False implemented as 1/0 51# To comply to all rules it must show that: n(AB) = nAonB, n(AoB) = nAnB 52 53select 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; 54 55# This should work with any internal representation of True/False 56# Result must be same as above 57 58select 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; 59 60drop table t1; 61 62# End of 4.1 tests 63