Re: Combining two bitmap scans out performs a single regular index scan?

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Mark Mielke <mark@xxxxxxxxxxxxxx> writes:
> To find records after a certain time, I must do one of:
>     select * from icpric where audtdate > ? or (audtdate = ? and 
> audttime > ?)

In recent releases (at least 8.2, don't remember about 8.1), a row
comparison is what you want:

	WHERE (auddate, adttime) > (?, ?)

			regards, tom lane

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TIP 6: explain analyze is your friend

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