Difference between revisions of "ZAP"
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Latest revision as of 10:04, 30 November 2009
Purpose
Permanently remove all records from the active table
Syntax
ZAP
See Also
CREATE, DELETE, DISPLAY PROTECTION, LIST PROTECTION, MODIFY STRUCTURE, PACK, SEQNO(), SET EXCLUSIVE, SET SAFETY, SET SEQNO
Description
The ZAP command permanently removes all of the records from the active table, without affecting the table structure. ZAP is equivalent to DELETE ALL, followed by PACK. The ZAP command can only be performed on a table that is open for exclusive use. The ZAP command is typically used to reinitialize a 'transaction' table, or a journal file. If SET SAFETY is ON, a message prompting for confirmation of the operation will be displayed before the ZAP can take place. ZAP also resets the table SEQNO to zero.
Any index files that have been associated with the active table are also reinitialized. Once a table has been 'zapped', there is no way of recovering the records that were previously contained in it. You should always use this command with caution. Permission to use the ZAP command on a table can be disabled. The ADMIN field in the <SECURITY> option from the menu bar of the CREATE, MODIFY STRUCTURE table work surface is used for this purpose.
Example
set exclusive on use newpatrons zap
Products
Recital Server, Recital
