Difference between revisions of "UNIQUE()"
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
[[Category:Indexing]] | [[Category:Indexing]] | ||
[[Category:Indexing Functions]] | [[Category:Indexing Functions]] | ||
Revision as of 01:33, 9 December 2012
Purpose
Function to test for unique indexes
Syntax
UNIQUE(<expN>)
See Also
INDEX, INDEXKEY(), INDEXORDER(), KEY(), SET UNIQUE
Description
The UNIQUE() function returns .T. if the specified index <expN> is unique, and .F. if it is not unique. <expN> is the index number from 0 to 20. If zero is specified then UNIQUE() tests the master index. For tagged multiple indexes, only the master index can be tested.
Example
use accounts index on name to name unique ? unique(0) .T.
Products
Lianja, Lianja Server
