Oracle-L: RE: Do you ever have days where you dont want to think ?

From: Grabowy, Chris <cgrabowy_at_fcg.com>
Date: Fri, 17 May 2002 14:43:22 -0800
Message-ID: <F001.00463D04.20020517144322@fatcity.com>

Try...

select a.f1, a.f2, a.f3, a.f4 from table1 a where not exists
(select b.n1 from b where b.n1 = a.f1);

Let me know...

Chris

-----Original Message-----
Sent: Friday, May 17, 2002 5:23 PM
To: Multiple recipients of list ORACLE-L

I just just wanna go lie on a beach naked on some remote island far far away and not think of anything for a month.

Here is the issue.....

I have a query that looks like this ...

select a.f1, a.f2, a.f3, a.f4 from table1 a where a.f1 not in
( select b.n1 from b );

there is a primary key index on b.n1
there is a concatenated primary key index on a.f1,a.f2,a.f3 there is a non-unique index on a.f1

the query shows that the index is being used on table b, but no indexes are being used on table a.

Mike
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Author: Johnson, Michael
INET: Michael.Johnson_at_oln-afmc.af.mil

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Author: Grabowy, Chris
INET: cgrabowy_at_fcg.com

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