Re: Common Table Expressions applied; some issues remain

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От Greg Stark
Тема Re: Common Table Expressions applied; some issues remain
Дата
Msg-id 4136ffa0905270410w57cb6c4ald8662f50370683ff@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Common Table Expressions applied; some issues remain  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Common Table Expressions applied; some issues remain  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Re: Common Table Expressions applied; some issues remain  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Wed, May 27, 2009 at 12:47 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> I'm not too thrilled about that solution because it still eliminates
> predictability of execution of volatile functions.

How so? It means the volatile function might only be executed for the
matching rows but the rows will still have the same value for the same
rows for all references to the CTE which seems like the key property
to me.

-- 
greg

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