Re: Different results from identical matviews

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От Paul Förster
Тема Re: Different results from identical matviews
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Msg-id 2553D145-15CC-4A52-A8B9-850A1650F8F7@gmail.com
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Ответ на Re: Different results from identical matviews  (Michael Lewis <mlewis@entrata.com>)
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Hi Michael,

> On 02. Jul, 2020, at 14:55, Michael Lewis <mlewis@entrata.com> wrote:
>
> Is now() computed at the time the view is defined and not at refresh? If this were a function, I would be more
suspiciousof that but a plain view, surely not. I hope. 

now() returns the time at the beginning of the transaction:

see: https://www.postgresql.org/docs/current/functions-datetime.html

If you want the time whenever you call the function, use clock_timestamp() instead. There's also a good article at:

https://www.cybertec-postgresql.com/en/postgresql-now-vs-nowtimestamp-vs-clock_timestamp/

Hope this helps.

Cheers,
Paul


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