SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function timeSlots (children 1)
     ExpressionList (children 1)
      Function toDateTime64 (children 1)
       ExpressionList (children 3)
        Literal \'2000-01-02 03:04:05.23\'
        Literal UInt64_2
        Literal \'UTC\'