UNIQUE()

From Recital Documentation Wiki
Revision as of 16:45, 8 December 2009 by Helengeorge (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

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