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Update sql statement with 2 tables

wellhole asked
Last Modified: 2012-05-10
I'm trying to update a table that where there are 2 keys to join to another table. What I have definitely does not work. The version of DB2 I'm running is on an as400 v5r3, so merge and recursion is not available, as far as i know. Any ideas? I'm hoping there's something simple so I don't have to use a cursor iteration...
SET ( CLDEL , CLCCTD) = ( 'D' , @CCTD ) 
from  session.orders 
WHERE CLDEL = 'A' AND CLSEQ = session.orders.seq AND CLCCTD = session.orders.cctd

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