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need help on having clause

Ram Korutla
Ranch Hand

Joined: Dec 24, 2007
Posts: 80

My objective is to identify records in a table where there is more than record with the same <col1,col2> combination.
Using the having clause, I can only check for one column right, how to get similar feature if I want to check on a combination
Please help

Hemavathy Ramamoorthy Gopal

Joined: May 13, 2008
Posts: 17
Hi Sridhar,

Please try out.

select * from table A where A.col1 = 'data' and A.col1=A.col2


select * from table A, table A1 where A.col1=A1.col2

Please reply with your feedback whether you meet your requirement or not.

Christophe Verré

Joined: Nov 24, 2005
Posts: 14688

Something like that ?

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Vinod Tiwari
Ranch Hand

Joined: Feb 06, 2008
Posts: 466

You should use self-join.

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I agree. Here's the link:
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