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I wrote:
One thing: how would I index this, for better performance if the user is
doing the look-up by part-number?

Charles Wilt wrote:
You can't.

Best you can do is have an index over part-number for each of the
three physical tables.

Which I already have, since the PFs are keyed.

The query engine will use those individual indexes when you query the view.

Works for me. Particularly given that the exercise turned out to be entirely academic, as the customer's three part-catalog files are supposed to be identical.


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