Re: refcursor error 55000 - Mailing list pgsql-general

From Tom Lane
Subject Re: refcursor error 55000
Date
Msg-id 10873.1160340528@sss.pgh.pa.us
Whole thread Raw
In response to refcursor error 55000  ("Karen Hill" <karen_hill22@yahoo.com>)
List pgsql-general
"Karen Hill" <karen_hill22@yahoo.com> writes:
> I get an error message 55000 when I try to traverse backwards in an
> refcursor.  Works fine going forward.  The hint says I need to use
> scroll.  What is the syntax for using scroll in a stored procedure that
> returns an refcursor?  Or do refcursors only support traversing forward?

AFAICS the SPI cursor code only supports the old "backward compatible"
behavior, which is that you can do backward scans only if the query plan
supports them as-is.  You might be able to force this by adding an ORDER
BY to the query to force a top-level sort.

            regards, tom lane

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