Re: [PATCHES] CREATE TEMP TABLE .... ON COMMIT

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От Gavin Sherry
Тема Re: [PATCHES] CREATE TEMP TABLE .... ON COMMIT
Дата
Msg-id Pine.LNX.4.21.0208100902100.10901-100000@linuxworld.com.au
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Ответ на Re: [PATCHES] CREATE TEMP TABLE .... ON COMMIT  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: [PATCHES] CREATE TEMP TABLE .... ON COMMIT  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: [PATCHES] CREATE TEMP TABLE .... ON COMMIT  (Bruce Momjian <pgman@candle.pha.pa.us>)
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On Fri, 9 Aug 2002, Tom Lane wrote:

> Gavin Sherry <swm@linuxworld.com.au> writes:
> > template1=# create temp table a (a int) on commit drop;
> > ERROR:  You must be inside a transaction to use ON COMMIT
>
> Surely that's only for ON COMMIT DROP, if you intend to offer the
> others?

I should have provided details of this in the email. SQL99 details the
baviour as follows:

If TEMPORARY is specified and ON COMMIT is omitted, then ON COMMIT
DELETE ROWS is implicit

This might give users a bit of a surprise so the effective behaviour is ON
COMMIT PRESERVE ROWS.

As for your question (and, perhaps, SQL99) I don't seen how it makes any
sense to specify ON COMMIT outside of a transaction block.

>
>             regards, tom lane
>

Gavin


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