<?xml version="1.0" ?>
<!--
Find all buildings within known flood zones.
-->
<wfs:GetFeature
   service="WFS"
   version="2.0.0"
   outputFormat="application/gml+xml; version=3.2"
   xmlns:sql="http://www.someserver.com/sql/1.0"
   xmlns:wfs="http://www.opengis.net/wfs/2.0"
   xmlns:fes="http://www.opengis.net/fes/2.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.opengis.net/wfs/2.0
                       http://schemas.opengis.net/wfs/2.0/wfs.xsd
                       http://www.someserver.com/sql/1.0 ./SqlQuery.xsd">
   <sql:Query targetDb="SQLMM">
      <sql:Text>
         SELECT * FROM buildings AS b, rivers AS r
         WHERE b.ground_plot.ST_Within(r.flood_zones) = 1
      </sql:Text>
   </sql:Query>
</wfs:GetFeature>