Difference between revisions of "COUNT"
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==Syntax== | ==Syntax== | ||
| − | COUNT [<scope>] | + | COUNT [<scope>] TO <memvar> |
[FOR <condition>] | [FOR <condition>] | ||
| − | |||
| − | |||
[WHILE <condition>] | [WHILE <condition>] | ||
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==Description== | ==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. | + | The COUNT command counts the number of records in the active table and stores the total to <memvar>. 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>==== | ====FOR <condition>==== | ||
If the for <condition> is used then only the records that satisfy the specified <condition> are counted. | If the for <condition> is used then only the records that satisfy the specified <condition> are counted. | ||
| − | |||
| − | |||
| − | |||
====WHILE <condition>==== | ====WHILE <condition>==== | ||
Revision as of 10:53, 10 March 2017
Contents
Purpose
Count records in the active table that satisfy a specified condition
Syntax
COUNT [<scope>] TO <memvar>
[FOR <condition>]
[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 and stores the total to <memvar>. 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.
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()
