troubleshooting Question

SQL Union Different Tables

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lcor asked on
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I came across some code and I'm trying to understand unions in SQL.

The code has two select statements between a union.  The two select statements are on the same table.

Isn't that a bad use of a union?  Shouldn't unions between different tables with like data?

Just trying to understand theory.  I can't post examples as they are proprietary.
Ron Malmstead
Network Operations Manager

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