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Item::print(): remove redundant parentheses

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by introducing new Item::precedence() method and using it
to decide whether parentheses are required
This commit is contained in:
Sergei Golubchik
2016-11-27 19:50:10 +01:00
parent 1db438c833
commit 180065ebb0
188 changed files with 2684 additions and 2553 deletions
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6
mysql-test/r/func_weight_string.result
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@ -119,7 +119,7 @@ SELECT * FROM t1 WHERE a=1 AND WEIGHT_STRING(a) IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a` = 1) and isnull(weight_string(`test`.`t1`.`a`,0,0,1)))
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 1 and weight_string(`test`.`t1`.`a`,0,0,1) is null
ALTER TABLE t1 MODIFY a DOUBLE ZEROFILL;
SELECT * FROM t1 WHERE a=1 AND WEIGHT_STRING(a) IS NULL;
a
@ -129,7 +129,7 @@ SELECT * FROM t1 WHERE a=1 AND WEIGHT_STRING(a) IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a` = 1) and isnull(weight_string(`test`.`t1`.`a`,0,0,1)))
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 1 and weight_string(`test`.`t1`.`a`,0,0,1) is null
ALTER TABLE t1 MODIFY a DECIMAL(10,1) ZEROFILL;
SELECT * FROM t1 WHERE a=1 AND WEIGHT_STRING(a) IS NULL;
a
@ -139,7 +139,7 @@ SELECT * FROM t1 WHERE a=1 AND WEIGHT_STRING(a) IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a` = 1) and isnull(weight_string(`test`.`t1`.`a`,0,0,1)))
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 1 and weight_string(`test`.`t1`.`a`,0,0,1) is null
DROP TABLE t1;
#
# End of 10.1 tests