Difference between revisions of "SEQNO()"
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==Purpose== | ==Purpose== | ||
Function to return a unique sequence number | Function to return a unique sequence number | ||
Revision as of 16:14, 28 October 2009
Purpose
Function to return a unique sequence number
Syntax
SEQNO([<workarea | alias>])
See Also
CURRSEQNO(), RECNO(), REPLACE(), SET POSTRECORD, SET SEQNO, UNIQUEROWID(), ZAP
Description
The SEQNO() function returns the next unique sequence number for the current table. Automatic locking is performed during the operation of this function if the specified table is opened shareable. The optional <workarea | alias> will return the next unique sequence number from the specified table. If there is no active table the SEQNO() function will return 0.
The SEQNO() function guarantees a unique sequence number even in a multi-user environment. The sequence number will continue increasing even after a PACK operation. A ZAP operation will reset the sequence number to 0. The sequence number of a table can be reset with the command SET SEQNO TO <expN>.
The SET SEQNO command and CURRSEQNO() and SEQNO() functions are only supported for Recital tables.
Example
append blank replace custno with seqno()
Products
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
