Re: Query not producing expected result

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От Tom Lane
Тема Re: Query not producing expected result
Дата
Msg-id 25696.1556728884@sss.pgh.pa.us
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Ответ на Query not producing expected result  (Chuck Martin <clmartin@theombudsman.com>)
Ответы Re: Query not producing expected result  (Chuck Martin <clmartin@theombudsman.com>)
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Chuck Martin <clmartin@theombudsman.com> writes:
> I need help figuring out why a query is not returning the records I expect
> it to. I'm searching on a DateTime column (timestamp without time zone -
> not nullable). The query includes:

>  AND event.Primaryresp_fkey = 5000011 AND event.DateTime <= 'May-1-2019'
>  AND event.EventDone < 1

> This does not return a record that has a DateTime value "May 1, 2019 9:52
> AM".

Well, no, since the implied value of the constant is 'May-1-2019 00:00'.

If you only want 1-day precision of the comparison, maybe you should cast
or truncate the timestamp down to date.

            regards, tom lane



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