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A join is not the same as a union. For example select * from jhhl1 union select * from jhhl2 returns ....+....1.... MYKEY MYCHAR A Test A B Test B C Test C D Test D E Test E F Test F ******** End While select a.*, b.* from jhhl1 a join jhhl2 b on a.mykey=b.mykey returns nothing ....+....1....+....2....+....3....+. MYKEY MYCHAR MYKEY MYCHAR ******** End of data ******** Summary: A union returns separate rows from each table while a join combines rows from multiple tables into a single row. Hey, I noticed that if I change the contents of jhhl3 from ....+....1... MYKEY MYCHAR C Test 1 F Test 2 ******** End to ....+....1... MYKEY MYCHAR C Test C F Test F ******** End Then I can do select * from jhhl1 union select * from jhhl2 except select * from jhhl3 and get ....+....1... MYKEY MYCHAR A Test A B Test B D Test D E Test E ******** End However, if I leave MYCHAR back at their original values then I get six rows. EXCEPT and INTERSECT are in the section "What's new for V5R3 in the SQL Reference Book". Looks like you'll have to use my earlier suggestion for obsolete versions of the operating system. Rob Berendt
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