Re: plpgsql arrays - Mailing list pgsql-performance

From Matthew Wakeling
Subject Re: plpgsql arrays
Date
Msg-id alpine.DEB.2.00.0904071616350.791@aragorn.flymine.org
Whole thread Raw
In response to Re: plpgsql arrays  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: plpgsql arrays  (justin <justin@emproshunts.com>)
Re: plpgsql arrays  (Merlin Moncure <mmoncure@gmail.com>)
List pgsql-performance
On Fri, 3 Apr 2009, Tom Lane wrote:
>> ... alternatively is there a way to read two results streams
>> simultaneously?
>
> Use two cursors and FETCH from each as needed?  In recent releases you
> can even scroll backwards, which you're going to need to do to make
> a merge join work.

What would be the syntax for putting a single row from a cursor into a
variable? I have tried:

FETCH INTO left left_cursor;

which says syntax error, and

left = FETCH left_cursor;

which gives the error 'ERROR:  missing datatype declaration at or near "="'

Matthew

--
 I've run DOOM more in the last few days than I have the last few
 months.  I just love debugging ;-)  -- Linus Torvalds

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