+---------------------------------+
|           SET UNIQUE            |
+---------------------------------+
SET UNIQUE ON | OFF

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Specifies if records with duplicate index keys will appear in an index
file.
Default value - OFF
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If UNIQUE is SET ON, any record with duplicate key will not be included
in index file.  Only first record with a particular key will be included
in index file.

An index file retains its UNIQUE status when you REINDEX.

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See Also:  INDEX, REINDEX, SET INDEX

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