Most efficient way to query dates

Hi!
Just wondering if anyone know the quickest or best way to to date comparisons with Oracle. Ie does it take longer for oracle to convert the input date from the inputted date to a date it can use to compare. eg
iuser.CreateDate <= to_date('07:Dec:2004:11:59:59:PM', 'DD:MON:YYYY:HH:MI:SS:AM')
OR
iuser.CreateDate <= to_date('07:12:2004:11:59:59:PM', 'DD:MM:YYYY:HH:MI:SS:AM')

Hello,
I have two comments:
a) what about to use only "<" operator with next day instead of "<="
iuser.CreateDate <= to_date('07:Dec:2004:11:59:59:PM', 'DD:MON:YYYY:HH:MI:SS:AM')
iuser.CreateDate < ('08:Dec:2004', 'DD:MON:YYYY')
b) I think that more faster could be passing the comparision date as date parameter iuser.CreateDate < :inp_test_date.
sasa

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{thread:id=410714} (see page 2)
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TimQuinn wrote:
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