| From: | Oleksii Kliukin <alexk(at)hintbits(dot)com> |
|---|---|
| To: | Álvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, David Fetter <david(at)fetter(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: \gexec \watch |
| Date: | 2018-12-06 14:01:35 |
| Message-ID: | 727325C1-FB57-4C78-A9E6-17F44EBB7184@hintbits.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi Álvaro,
> On 6. Dec 2018, at 13:56, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:
>
> To Oleksii's question, I think if you want to repeat the first query
> over and over, you'd use something like this:
>
> select format('select now() as execution_time, %L as generation_time', now()) as query \gset
> :query \watch
Nice one, although it only works if the original query outputs a single row (because of \gset).
I do agree it’s not that useful to reuse the original query instead of executing it anew each time.
Cheers,
Oleksii
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