From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | daveh(at)insightdist(dot)com (David Hartwig) |
Cc: | hackers(at)postgreSQL(dot)org, pgsql-interfaces(at)postgreSQL(dot)org |
Subject: | Re: [HACKERS] Cursor Movement - Past the End |
Date: | 1998-12-13 04:34:19 |
Message-ID: | 199812130434.XAA14173@candle.pha.pa.us |
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Lists: | pgsql-hackers pgsql-interfaces |
> We are in the process of implementing several additional Extended Fetch
> capabilities into the ODBC driver. In order to complete the full set of
> functions, we need to be able to FETCH to the end of the cursor, detect
> the end, and then be able to move to prior positions in the the cursor.
> The problem is that once the end of the cursor is reached the cursor is
> no longer usable.
>
> I think the cursor should still be valid after moving past the end. I
> have tinkered around to see if the cursor can be preserved after
> moving/fetching past the end without much luck. I am throwing this
> out to the list in the hopes that someone will respond "Gee, Dave, all
> you have to do is (*^%^$$%$#!)".
>
> I would greatly appreciate any assistance in resolving this problem.
> Many ODBC components and applications make heavy use of these extended
> features.
Added to TODO:
* make CURSOR valid even after you hit end of cursor
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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