public StringBuilder regTableModifiable(
     Set<String> oraTabName, List<Object> list, StringBuilder sb) {
   sb = Utils.appendSQLListWithList(oraTabName, left, sb, list);
   sb.append(getRelationString());
   sb = Utils.appendSQLListWithList(oraTabName, right, sb, list);
   return sb;
 }
 public void appendSQL(StringBuilder sb) {
   Utils.appendSQLList(left, sb);
   sb.append(getRelationString());
   Utils.appendSQLList(right, sb);
 }