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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. 

mysql-test/r/func_time.result:
  Test case result adjusted after fixing bug#56271.
mysql-test/r/parser.result:
  Test case result adjusted after fixing bug#56271.
mysql-test/r/select.result:
  A test case result adjusted after fixing bug#56271.
mysql-test/r/strict.result:
  Test case result adjusted after fixing bug#56271.
mysql-test/r/type_datetime.result:
  Added a test case for the bug#56271.
mysql-test/t/strict.test:
  Test case adjusted after fixing bug#56271.
mysql-test/t/type_datetime.test:
  Added a test case for the bug#56271.
sql/item_timefunc.cc:
  Bug#56271: Wrong comparison result with STR_TO_DATE function
  val_int and result_as_longlong methods were added to the Item_func_str_to_date
  class. 
  Item_func_str_to_date::get_date now throws the ER_WRONG_VALUE_FOR_TYPE warning
  on incorrect value.
sql/item_timefunc.h:
  Bug#56271: Wrong comparison result with STR_TO_DATE function
  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
commit e435df8e09
9 changed files with 124 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

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