SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function minus (children 1)
     ExpressionList (children 2)
      Function toRelativeSecondNum (children 1)
       ExpressionList (children 2)
        Function toDateTime (children 1)
         ExpressionList (children 1)
          Literal UInt64_1412106600
        Literal \'Pacific/Pitcairn\'
      Function toRelativeSecondNum (children 1)
       ExpressionList (children 2)
        Function toDateTime (children 1)
         ExpressionList (children 1)
          Literal UInt64_0
        Literal \'Pacific/Pitcairn\'