SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_00818
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier s_00818
     TableJoin (children 1)
      Function and (children 1)
       ExpressionList (children 2)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier t_00818.a
          Identifier s_00818.a
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier t_00818.b
          Identifier s_00818.a
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier t_00818.a