CREATE FUNCTION "URX_PUBLIC"."_drop_raster_constraint_spatially_unique"(rastschema name, rasttable name, rastcolumn name) 
 RETURNS boolean AS 
$BODY$
	DECLARE
		cn text;
	BEGIN
		SELECT
			s.conname INTO cn
		FROM pg_class c, pg_namespace n, pg_attribute a, pg_constraint s, pg_index idx, pg_operator op
		WHERE n.nspname = $1
			AND c.relname = $2
			AND a.attname = $3
			AND a.attrelid = c.oid
			AND s.connamespace = n.oid
			AND s.conrelid = c.oid
			AND s.contype = 'x'
			AND 0::smallint = ANY (s.conkey)
			AND idx.indexrelid = s.conindid
			AND pg_get_indexdef(idx.indexrelid, 1, true) LIKE '(' || quote_ident($3) || '::geometry)'
			AND s.conexclop[1] = op.oid
			AND op.oprname = '=';

		RETURN  "URX_PUBLIC"._drop_raster_constraint($1, $2, cn);
	END;
	$BODY$
 LANGUAGE 'plpgsql' VOLATILESTRICT ;