Re: Writeable CTEs

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От Marko Tiikkaja
Тема Re: Writeable CTEs
Дата
Msg-id 4B437ABA.6000405@cs.helsinki.fi
обсуждение исходный текст
Ответ на Re: Writeable CTEs  (Greg Stark <gsstark@mit.edu>)
Ответы Re: Writeable CTEs  (Josh Berkus <josh@agliodbs.com>)
Список pgsql-hackers
On 2010-01-05 19:21 +0200, Greg Stark wrote:
> with t as (delete from foo returning *)
> select * from t where x=?
>
> applications will almost certainly expect the number to match the
> actual number of rows returned and may well misbehave if they don't.

I probably wasn't clear about the actual problem in the original post. 
The problem only affects INSERT, UDPATE and DELETE where you are 
actually counting affected rows (i.e. PQcmdTuples(), not PQntuples()) so 
the this example would work as expected.


Regards,
Marko Tiikkaja


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