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Bug#29555: Comparing time values as strings may lead to a wrong result.

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Time values were compared as strings. This led to a wrong comparison
result when comparing values one of which is under 100 hours and another is
over 100 hours.

Now when the Arg_comparator::set_cmp_func function sees that both items to
compare are of the TIME type it sets the comparator to the
Arg_comparator::compare_e_int or the Arg_comparator::compare_int_unsigned
functions.
This commit is contained in:
evgen@moonbone.local
2007-07-11 23:18:02 +04:00
parent f3d270df69
commit df9c376e72
3 changed files with 40 additions and 0 deletions
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18
mysql-test/r/type_time.result
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@@ -85,3 +85,21 @@ sec_to_time(time_to_sec(t))
13:00:00
09:00:00
drop table t1;
select cast('100:55:50' as time) < cast('24:00:00' as time);
cast('100:55:50' as time) < cast('24:00:00' as time)
0
select cast('100:55:50' as time) < cast('024:00:00' as time);
cast('100:55:50' as time) < cast('024:00:00' as time)
0
select cast('300:55:50' as time) < cast('240:00:00' as time);
cast('300:55:50' as time) < cast('240:00:00' as time)
0
select cast('100:55:50' as time) > cast('24:00:00' as time);
cast('100:55:50' as time) > cast('24:00:00' as time)
1
select cast('100:55:50' as time) > cast('024:00:00' as time);
cast('100:55:50' as time) > cast('024:00:00' as time)
1
select cast('300:55:50' as time) > cast('240:00:00' as time);
cast('300:55:50' as time) > cast('240:00:00' as time)
1