RE: SQL Delete Performance - Why so Horrible?

["Chris Payne" <CPayne@xxxxxxxxxxxxxxx>]

Of the 1.5 million about how many records are you removing? If it is a
small % then indexing by company could help dramatically (or at least it
would with a select, I have never had a performance sensitive delete). 

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of William Washington
III
Sent: Thursday, April 14, 2005 4:35 PM
To: midrange-l@xxxxxxxxxxxx
Subject: SQL Delete Performance - Why so Horrible?

Hi All,

Why is the SQL DELETE performace so terrible?

I have a file with 1,500,000 records.  When I do:

DELETE FROM filename WHERE company = pCompany

in a stored procedure running in batch, it takes nearly 30 minutes!  Of
course,
an SQL DROP or a CL "CLRPFM" works within seconds, but I really must
check the
company before deleting.

Would indexing by company help?

Thoughts?  Ideas?  Thanks.

William

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