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From: Yi Zhang on 4 Mar 2010 13:33
Hi,
I need to join many tables with same structure. I implemented it by
proc append with a loop in macro. But my other part of the program is
in sql, and I believe it would be faster if I don't invoke sql and
quit it in each loop.
I know "out union" can join tables, but I don't know if it is as fast
as proc append since append does not read the base table. Can anybody
help me with this? Thanks.


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