SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Literal \'n fj n\'
    Identifier t1.x
    Identifier t2.x
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier nt (alias t1)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier nt (alias t2)
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier x
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier t1.x
