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Message Posted: Tue, 20 Jun 2006 @ 20:29:56 GMT

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You can update the same target row with multiple source rows. This leads to ambiguity in deciding which one to use to update.

You can have something like this:

     UPDATE TAB1 FROM
     (SELECT max(CNAME) cmax
     FROM TAB2 b
     WHERE b.COL1 = TAB1.COL1) VAL
     SET  COL2=VAL.CMAX;

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