SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toStartOfInterval (children 1)
     ExpressionList (children 2)
      Function toDateTime (children 1)
       ExpressionList (children 2)
        Literal \'2021-03-23 13:58:00\'
        Literal \'Asia/Kolkata\'
      Function toIntervalHour (children 1)
       ExpressionList (children 1)
        Literal UInt64_6
