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Re: FETCH FORWARD 0 and "cursor can only scan forward" error - Mailing list pgsql-general

From Tom Lane
Subject Re: FETCH FORWARD 0 and "cursor can only scan forward" error
Date
Msg-id 6138.1378314278@sss.pgh.pa.us
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In response to Re: FETCH FORWARD 0 and "cursor can only scan forward" error  (Trigve Siver <trigves@yahoo.com>)
Responses Re: FETCH FORWARD 0 and "cursor can only scan forward" error  (Trigve Siver <trigves@yahoo.com>)
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Trigve Siver <trigves@yahoo.com> writes:
> yes I know that when specifying "FORWARD 0" that no move is done and
> actual record is returned. But my question is why it is forbidden by "NO
> SCROLL"?

Because it's implemented as "back up 1 row and re-fetch".

            regards, tom lane

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