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Re: Query on DATETIME for a date (the whole day)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Basil Bourque <basil(dot)list(at)me(dot)com>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: Query on DATETIME for a date (the whole day)
Date: 2011-10-20 02:32:27
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Lists: pgsql-novice
Basil Bourque <basil(dot)list(at)me(dot)com> writes:
> For a "timestamp with time zone" column, how do I find all rows where the value is within the beginning and ending of a single date?

If you compare a date to a timestamp, the date is taken to mean midnight
of its day.  So you need something along the line of

	WHERE timestampcol BETWEEN dateval AND dateval+1

> And I'm concerned about local date time. I want to find by the user's local beginning and end of the day, not UTC.

Well, you're not being too clear about what you need here, but in what
I suggest above, "midnight" will be interpreted according to the current
"timezone" setting.

			regards, tom lane

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