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Bug#56271: Wrong comparison result with STR_TO_DATE function

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The Item_func_str_to_date class wasn't providing correct integer DATETIME
representation as expected. This led to wrong comparison result and didn't
allowed the STR_TO_DATE function to be used with indexes.
Also, STR_TO_DATE function was inconsisted on throwing warnings/errors.
Fixed now.

val_int and result_as_longlong methods were added to the Item_func_str_to_date
class.
This commit is contained in:
Evgeny Potemkin
2010-09-07 10:45:00 +04:00
parent b75958e665
commit e408bf4e14
9 changed files with 124 additions and 31 deletions
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4
mysql-test/r/parser.result
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@ -556,9 +556,13 @@ DROP TABLE IF EXISTS t1;
SELECT STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE;
STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE
NULL
Warnings:
Warning 1411 Incorrect datetime value: '10:00 PM' for function str_to_date
SELECT STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL (INTERVAL(1,2,3) + 1) MINUTE;
STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL (INTERVAL(1,2,3) + 1) MINUTE
NULL
Warnings:
Warning 1411 Incorrect datetime value: '10:00 PM' for function str_to_date
SELECT "1997-12-31 23:59:59" + INTERVAL 1 SECOND;
"1997-12-31 23:59:59" + INTERVAL 1 SECOND
1998-01-01 00:00:00