use cursor in a function - Mailing list pgsql-novice

From Rory Campbell-Lange
Subject use cursor in a function
Date
Msg-id 20030617101843.GB6763@campbell-lange.net
Whole thread Raw
Responses Re: use cursor in a function  (Joe Conway <mail@joeconway.com>)
List pgsql-novice
This is a repost of a question which still confuses me.

I wish to write a function that returns NUM_ROWS for a particular
condition AND a subset of those rows (eg by using LIMIT and OFFSET).

I imagine having function b that returns a reference to a cursor and
NUMROWS. In function a I use the cursor to effectively do the LIMIT and
OFFSET, and append the NUM_ROWS column to all of the results.

Is this sensible, efficient, feasible? I have not used cursors before.

Or should I simply do 2 separate functions, 1 for NUM_ROWS, the
other for the result set I want?

Help much appreciated!
Rory
--
Rory Campbell-Lange
<rory@campbell-lange.net>
<www.campbell-lange.net>

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