Sunday, August 24, 2008

[PERFORM] NOW vs CURRENT_DATE

Hello every body,

I just discover a big not only big huge difference between NOW() and
CURRENT_DATE.

Did you already know about it and do you know why ?

DELETE FROM blacklist where bl_date < (NOW() - interval '2 DAY');
on 6 000 000 of records
699 ms

DELETE FROM blacklist where bl_date < (CURRENT_DATE - interval '2 DAY');
on 6 000 000 of records

0.065 ms

tx

david

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