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What means ".... FROM DUAL" in SQL statements?

pstein-JavaNetJun 26 2008 — edited Jun 30 2008
Occasionally I find in different SQL statement the appedix "....from dual" e.g.

SELECT blahblah FROM DUAL;

It seems to me that this is a special built-in table.

What does that mean exactely?

Peter
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Locked on Jul 28 2008
Added on Jun 26 2008
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