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191fa29932
Rework parser expression rules
Rework handling for "||" concat/or
Eliminate some shift/reduce conflicts
Add support for "xxx IS [ NOT ] truth_value"
mysql-test/r/ansi.result:
Fix test for new BROKEN_NOT mode bit
mysql-test/r/bool.result:
WL#638
New test for BROKEN_NOT mode
New test for "expr IS [NOT] truth_value" syntax
mysql-test/r/sql_mode.result:
Fix test for new BROKEN_NOT mode bit
mysql-test/t/bool.test:
WL#638
New test for BROKEN_NOT mode
New test for "expr IS [NOT] truth_value" syntax
sql/lex.h:
WL#638
"&&" and "AND" return different tokens,
NOT token changed to NOT_SYM
OR_OR_CONCAT token changed to OR_OR_SYM
New token "UNKNOWN"
sql/mysql_priv.h:
WL#638
New mode: BROKEN_NOT
sql/mysqld.cc:
WL#638
New mode: BROKEN_NOT
sql/set_var.cc:
WL#638
New mode: BROKEN_NOT
BROKEN_NOT is set in MYSQL323 and MYSQL40 modes
sql/sql_lex.cc:
Bug#638
Alter tokens returned by lexer depending upon sql_mode:
Return NOT2_SYM token instead of NOT_SYM when in BROKEN_NOT mode
Return OR2_SYM token instead of OR_OR_SYM when not in PIPES_AS_CONCAT mode
sql/sql_yacc.yy:
WL#638
Change grammar to respect proper SQL syntax for NOT
Clean up grammar, eliminate >100 shift/reduce conflicts
New support for "expr IS [NOT] truth_value" SQL syntax
Remove or_or_concat() support func. New support func is_truth_value()
89 lines
2.6 KiB
Plaintext
89 lines
2.6 KiB
Plaintext
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 sql_mode='broken_not';
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select * from t1 where not a between 2 and 3;
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a
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set sql_mode=default;
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select * from t1 where not a between 2 and 3;
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a
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0
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1
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select a, a is false, a is true, a is unknown from t1;
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a a is false a is true a is unknown
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0 1 0 0
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1 0 1 0
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NULL 0 0 1
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select a, a is not false, a is not true, a is not unknown from t1;
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a a is not false a is not true a is not unknown
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0 0 1 1
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1 1 0 1
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NULL 1 1 0
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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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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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