DSCOUNT

Syntax

DSCOUNT(dsId, 'optionalFilterFormula')

Example

DSCOUNT('STAFF')

Add a filter formula using {{this[column]}} to refer to columns.
DSCOUNT('STAFF', '{{this[2]}} = "BOB"') counts rows where 3rd column = BOB

Notes

Refer to the Data Source by its External Id (from the Data Source -> Settings page).

Related 

DSSUM, DSAVG, DSMAX, DMIN, DSFIRST, DSLAST