On Sun, Sep 7, 2008 at 12:17 PM, NickC <[EMAIL PROTECTED]> wrote:
> Slight progress but no idea why!
>
>
> Three ways that don't work (too slow):
>
> SELECT MIN(OrdNo) FROM Orders WHERE OrdNo > cLastPONum
>
> SELECT TOP 1 OrdNo FROM Orders WHERE OrdNo > cLastPONum ORDER BY OrdNo ASC
>
> SELECT * FROM Orders WHERE OrdNo IN ;
>        (SELECT TOP 1 OrdNo FROM Orders WHERE OrdNo > cLastPONum ;
>        ORDER BY OrdNo ASC)
>
>
> And one way that does work:
> SELECT OrdNo FROM Orders WHERE OrdNo > cLastPONum ORDER BY OrdNo INTO CURSOR
> Temp1
> cOrdNo = Temp1.OrdNo
>
> However put a MIN, MAX or TOP 1 on and it goes excruciatingly slow again.
-------------------------------------------------

how many indexes on Ordno?

Why not make a fake table to hold just the orders for the past ??? 180
days perhaps.

Now your NEXT or Prev. navigation will give you the actual value you
then do your query for.

-- 
Stephen Russell
Sr. Production Systems Programmer
Mimeo.com
Memphis TN

901.246-0159


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