SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier date_field
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function file (children 1)
       ExpressionList (children 2)
        Literal \'03259.orc\'
        Literal \'ORC\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier number
