Mike,
If you have lots of duplicate provnum fields in cClaimstable then have you
tried "select distinct" in both the selects. This should be quicker (I think),
especially in the 2.5m row table.
Dave
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-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
MB Software Solutions General Account
Sent: 16 August 2012 15:29
To: [email protected]
Subject: Query taking 4 minutes...ugh
VFP9SP2 - WinXP - dbfs on network
I have to query 2 tables to populate a lookup list:
SELECT x1.provnum ;
FROM (ADDBS(this.cDataPath)+this.cClaimsTable) x1 ; UNION ; SELECT x2.provnum ;
FROM (ADDBS(this.cDataPath)+this.cDischargeTable) x2 ; INTO CURSOR curTemp
This query is taking forever (4 minutes!). There's no WHERE clause so it's not
optimizable. But is there a better way?
My current plan now is to create logic that extracts the provnums into a
separate table and just query that. That makes complete sense to me.
(These tables are basically input files from a vendor, with the provnum built
in and not sent in a separate lookup table.)
Other ideas?
tia,
--Mike
[excessive quoting removed by server]
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