Re: [patch] A \pivot command for psql

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От Pavel Stehule
Тема Re: [patch] A \pivot command for psql
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Msg-id CAFj8pRC29KZEtMxyG3_CHd-2wBdFa2hmd68oTY9Bm3Y6NSGZMw@mail.gmail.com
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Ответ на Re: [patch] A \pivot command for psql  (David Fetter <david@fetter.org>)
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2015-08-10 6:04 GMT+02:00 David Fetter <david@fetter.org>:
On Sun, Aug 09, 2015 at 07:29:40PM +0200, Daniel Verite wrote:
>   Hi,
>
> I want to suggest a client-side \pivot command in psql, implemented
> in the attached patch.
>
> \pivot takes the current query in the buffer, execute it and
> display it pivoted by interpreting the result as:
>
> column1 => row in pivoted output
> column2 => column in pivoted output
> column3 => value at (row,column) in pivoted ouput

This is really neat work, and thanks for the patch.

This issue in this one as in the crosstab extension is that it's
available only if you are using some particular piece of extra
software, in this case the psql client.

I'm working up a proposal to add (UN)PIVOT support to the back-end.
Would you like to join in on that?

PIVOT, UNPIVOT should be preferred solution

Pavel

I can look on implementations in other db
 

Cheers,
David.
--
David Fetter <david@fetter.org> http://fetter.org/
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