The FILTER-ROW directive filters records based on a condition.
Syntax
filter-row exp:{<condition>} [type (true/false)]
Usage Notes
The FILTER-ROW directive applies the filter type and a boolean or regular expression on a column value for each record. If the expression matches or returns true for the column value, then the record is omitted; otherwise, it is passed on as-is to the input of the next directive.