Re: plpgsql cursors : dynamic or static?

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От Tom Lane
Тема Re: plpgsql cursors : dynamic or static?
Дата
Msg-id 3204.1035399408@sss.pgh.pa.us
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Ответ на Re: plpgsql cursors : dynamic or static?  (Josh Berkus <josh@agliodbs.com>)
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Josh Berkus <josh@agliodbs.com> writes:
>> Are cursors in plpgsql dynamic or static?
>> 
>> FOR rec in   SELECT f1,f2 
>> FROM table1 WHERE .... LOOP
>> 
>> /* some codes that manipulate table1 */
>> END LOOP;

> Technically speaking, that is not a cursor, even though it serves the same 
> purpose.

> I'm pretty sure it's static, but it would be easy to test ... why don't you 
> give it a try?

The result definitely will be static in 7.3.  I'm not entirely sure
about prior releases: we used to manipulate the current-command counter
in a different way.
        regards, tom lane


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