SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier d4
    Identifier f1
    Function minus (children 1)
     ExpressionList (children 2)
      Identifier d4
      Identifier f1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier f1
