Re: pgbench - allow to store select results into variables

Hi

2016-07-09 10:20 GMT+02:00 Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>:

>
> Hello devs,
>
> I mentionned my intention to add some features to pgbench back in March:
>
> https://www.postgresql.org/message-id/alpine.DEB.2.10.1603301618570.5677@sto
>
> The attached patch adds an \into meta command to store results of
> preceding SELECTs into pgbench variables, so that they can be reused
> afterwards.
>
> The feature is useful to make more realistic scripts, currently pgbench
> script cannot really interact with the database as results are discarded.
>
> The chosen syntax is easy to understand and the implementation is quite
> light, with minimal impact on the code base. I think that this is a
> reasonnable compromise.
>
> The SELECTs must yield exactly one row, the number of variables must be
> less than the number of columns.
>
> Also attached a set of test scripts, especially to trigger various error
> cases.
>
>
Why you are introducing \into and not \gset like psql does?

Regards

Pavel

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> Fabien.
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