Archives of the TeradataForum

Message Posted: Fri, 20 Aug 2004 @ 08:23:06 GMT

	<Prev	Next>		<<First	<Prev	Next>	Last>>

Hi,

Not sure what release of Teradaa you are on, but the following should do the trick, on V2R4.1 and onwards.

     CREATE VOLATILE TABLE DEL_KEYS
     (
         PK1 CHAR(2)
       , PK2 CHAR(2)
       , PK3 CHAR(2)
     )
     UNIQUE PRIMARY INDEX (PK1, PK2, PK3) ON COMMIT PRESERVE ROWS;

     INSERT INTO DEL_KEYS
     SELECT PK1, PK2, PK3
     FROM TAB
     WHERE (PK1, PK2) IN
     (SELECT
        PK1, PK2
      FROM TAB
      GROUP BY 1,2
      HAVING COUNT(*) > 1)
     QUALIFY CSUM(1, PK1, PK2) > 1

     DELETE FROM TAB
     WHERE (PK1, PK2, PK3) IN
     (SELECT PK1, PK2, PK3 FROM DEL_KEYS)

     DROP TABLE DEL_KEYS;

     SELECT * FROM TAB;

Hope this helps.

Regards

Matthew Winter
Certified Teradata Master
Senior Consultant - Teradata - Sydney, Australia

	<Prev	Next>		<<First	<Prev	Next>	Last>>