$sSQL .= ' ST_AsText(prevgeometry) AS prevgeom, ';
$sSQL .= ' ST_AsText(newgeometry) AS newgeom';
$sSQL .= ' FROM import_polygon_error ';
$sSQL .= ' ST_AsText(prevgeometry) AS prevgeom, ';
$sSQL .= ' ST_AsText(newgeometry) AS newgeom';
$sSQL .= ' FROM import_polygon_error ';