Optional
Selects features based on the specified query and prepares selection parameters.
Static
MapServer wants 1 filter per underlying WFS queryLayer, all included in parentheses QGIS-server wants 1 filter per underlying WFS queryLayer, each in its own in parentheses
MapServer: (......) QGIS-server: (...)(...)
Selects features based on the specified query and prepares selection parameters.