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Message Posted: Wed, 25 Jul 2007 @ 18:19:59 GMT


     
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Subj:   UPDATE, SET, & Subquery Re-visited
 
From:   Anantaraman, Kumaran

A previous post asked how to code an UPDATE statement if the expression in the SET clause were to use a subquery.

And suggested answers were like :

     UPDATE SUMMARY_TABLE
     FROM
       (
         SELECT COUNT(1) TOTAL_COLUMN
         FROM TABLE_OF_MISMATCHES
       ) b
     SET TOTAL_COLUMN = b.TOTAL_COLUMN

However, the FROM clause is (from manual) '.. a Teradata extension to the ANSI SQL-2003 standard.'. So, then, how to code the above UPDATE functionality without using FROM clause?



     
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