Difference between revisions of "COUNT"
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Revision as of 10:55, 4 February 2013
Contents
Purpose
Count records in the active table that satisfy a specified condition
Syntax
COUNT [<scope>]
[FOR <condition>]
[TO <memvar>]
[WHILE <condition>]
See Also
AVERAGE, LOCATE, SEEK, SET DELETED, SET FILTER, SUM, TOTAL
Description
The COUNT command counts the number of records in the active table. If no <scope> is specified, ALL records will be counted. If SET FILTER TO is in effect, then only those records that satisfy the filter <condition> are counted. If SET DELETED is ON, then records marked for deletion will not be included in the COUNT.
FOR <condition>
If the for <condition> is used then only the records that satisfy the specified <condition> are counted.
TO <memvar>
Using the TO <memvar> clause causes the result of the COUNT operation to be stored in the specified memory variable.
WHILE <condition>
The WHILE clause can be used in conjunction with the SEEK or LOCATE commands to restrict the range of records counted. When the WHILE option is used the <scope> defaults to REST.
Example
use patrons count to nResult for event = "CHOPIN" and date = date()
