- $sSQL .= "ST_Y(ST_PointN(ExteriorRing(ST_Box2D(geometry)),4)) as minlat,ST_Y(ST_PointN(ExteriorRing(ST_Box2D(geometry)),2)) as maxlat,";
- $sSQL .= "ST_X(ST_PointN(ExteriorRing(ST_Box2D(geometry)),1)) as minlon,ST_X(ST_PointN(ExteriorRing(ST_Box2D(geometry)),3)) as maxlon";
+ $sSQL .= "ST_YMin(geometry) as minlat,ST_YMax(geometry) as maxlat,";
+ $sSQL .= "ST_XMin(geometry) as minlon,ST_XMax(geometry) as maxlon";