code: private void appendJoinSQL92NoParen(Join join, StringBuffer where, StringBuffer buf)
      {
          if (join.isOuter)
          {
              buf.append(" LEFT OUTER JOIN ");
          }
          else
          {
              buf.append(" INNER JOIN ");
          }
  
          buf.append(join.right.getTableAndAlias());
          buf.append(" ON ");
          join.appendJoinEqualities(buf);
  
          appendTableWithJoins(join.right, where, buf);
      }
docs: Append Join for SQL92 Syntax without parentheses