SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function toDateTime64 (alias dt1) (children 1)
     ExpressionList (children 3)
      Literal \'1969-12-31 23:59:59.999999998\'
      Literal UInt64_9
      Literal \'UTC\'
    Function toDateTime64 (alias dt2) (children 1)
     ExpressionList (children 3)
      Literal \'1969-12-31 23:59:59.999999999\'
      Literal UInt64_9
      Literal \'UTC\'
   ExpressionList (children 4)
    Function less (children 1)
     ExpressionList (children 2)
      Identifier dt1
      Identifier dt2
    Function equals (children 1)
     ExpressionList (children 2)
      Function plus (children 1)
       ExpressionList (children 2)
        Identifier dt1
        Function toIntervalNanosecond (children 1)
         ExpressionList (children 1)
          Literal UInt64_1
      Identifier dt2
    Function greater (children 1)
     ExpressionList (children 2)
      Function plus (children 1)
       ExpressionList (children 2)
        Identifier dt1
        Function toIntervalNanosecond (children 1)
         ExpressionList (children 1)
          Literal UInt64_2
      Identifier dt2
    Function greater (children 1)
     ExpressionList (children 2)
      Function plus (children 1)
       ExpressionList (children 2)
        Identifier dt1
        Function toIntervalNanosecond (children 1)
         ExpressionList (children 1)
          Literal UInt64_3
      Identifier dt2