SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 4)
    Identifier a
    Identifier b
    Identifier c
    Literal \'original\' (alias original)
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier with_fill_staleness
   ExpressionList (children 2)
    OrderByElement (children 2)
     Identifier a
     Function toIntervalSecond (children 1)
      ExpressionList (children 1)
       Literal UInt64_2
    OrderByElement (children 4)
     Identifier b
     Function toDateTime (children 1)
      ExpressionList (children 1)
       Literal \'2016-06-15 23:01:00\'
     Literal UInt64_2
     Literal UInt64_5
   ExpressionList (children 1)
    InterpolateElement (column c) (children 1)
     Identifier c
