Oracle-L: RE: Delete query

From: Eberhard, Jeff <Jeff.Eberhard_at_Rolls-RoyceGS.com>
Date: Tue, 09 Jul 2002 10:49:34 -0800
Message-ID: <F001.00492A36.20020709104934@fatcity.com>

To delete the oldest record for each userid (keep record if there is only one)

delete from table a
where created = (select min(created)

                 from table b
                 where b.user_id = a.user_id
                 having count(*) > 1);

--Jeff

-----Original Message-----

Sent: Tuesday, July 09, 2002 11:00 AM
To: Multiple recipients of list ORACLE-L

Hi,

Can anyone help me with this delete statement?

I have the following table:

 Name                                      Null?    Type
 ----------------------------------------- -------- -------------
 USER_ID                                   NOT NULL NUMBER(15)
 PASSWORD                                           VARCHAR2(30)
 CREATED                                            DATE

What I need to do is delete the oldest record for a particular user_id. And its doing my head in. Any help appreciated!

Thanks,
Steve.

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Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Steven Hovington
INET: steven.hovington_at_procession.com

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Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Eberhard, Jeff
INET: Jeff.Eberhard_at_Rolls-RoyceGS.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists


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