Difference between revisions of "UNIQUE()"
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| − | [[INDEXKEY()]], [[KEY()]], [[INDEXORDER()]], [[SET UNIQUE | + | [[INDEXKEY()]], [[KEY()]], [[INDEXORDER()]], [[SET UNIQUE]], [[INDEX]] |
Revision as of 14:48, 20 March 2009
Contents
UNIQUE()
Class
Indexing
Purpose
Function to test for unique indexes
Syntax
UNIQUE(<expN>)
See Also
INDEXKEY(), KEY(), INDEXORDER(), SET UNIQUE, INDEX
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
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
