Re:Optimizing the query to increase performance??

From: <dgoulet_at_vicr.com>
Date: Wed, 26 Sep 2001 11:24:53 -0700
Message-ID: <F001.00399B43.20010926113505@fatcity.com>

Raghu,

I assuming your running with rule based optimization, therefore I'll ask why your using the driving table in an outer join? Especially when you can't handle a missing record therein (CF.EFF_START_DATE and CF.EFF_STOP_DATE). Outer joins almost always require a full table scan.

Dick Goulet

____________________Reply Separator____________________
Author: "Raghu Kota" <raghukota_at_hotmail.com>
Date:       9/26/2001 11:05 AM

Hi Friends,

I had a query running longer time!!, what is best way to optimize this query?? Or can I break this query for 5000 records each..Any ideas and suggestions??

SELECT DISTINCT CC.CUST_NO, CF.DISBURSE_CUST_NO FROM CUSTOMER_CODE CC, CUSTOMER_FINANCE CF WHERE CC.CUST_NO = CF.BILL_CUST_NO(+) AND CC.CUST_NO BETWEEN 10000 AND 999999 AND (CF.EFF_START_DATE <= '16-SEP-2001' AND CF.EFF_STOP_DATE >= '16-SEP-2001') Thanks
Raghu.

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Author: Raghu Kota
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Author:
INET: dgoulet_at_vicr.com

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