https://sourceforge.net/forum/message.php?msg_id=5896349

db/ddlutils/postgresql/functions/round,sql

@@ -0,0 +1,9 @@
+CREATE OR REPLACE FUNCTION round (
+ IN NUMERIC, -- $1 numeric
+ IN NUMERIC -- $2 numeric
+) RETURNS NUMERIC AS
+$$
+ BEGIN
+	RETURN ROUND($1, cast($2 as integer));
+ END;
+$$ LANGUAGE plpgsql;