Difference between revisions of "UNIQUE()"
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==Purpose== | ==Purpose== | ||
Function to test for unique indexes | Function to test for unique indexes | ||
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==See Also== | ==See Also== | ||
| − | [[ | + | [[INDEX]], [[INDEXKEY()]], [[INDEXORDER()]], [[KEY()]], [[SET UNIQUE]] |
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==Products== | ==Products== | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
| + | [[Category:Indexing]] | ||
| + | [[Category:Indexing Functions]] | ||
Latest revision as of 16:45, 8 December 2009
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
Recital, Recital Server
