Why is the ResultSet not same for insert and select queries

When I use session.execute in cassandra, I notice that the ResultSet's structure is different for the same table. If I am querying the table to get a record using Where, the ResultSet contains the data fetched from the table.

val resultSet = session.execute(whereClause)

gives

ResultSet[ exhausted: false, Columns[year(bigint), month(bigint), 
    creation_time_hour(bigint), creation_time_minute(bigint), 
    question_id(uuid), question_description(varchar)]]

But if I use Insert, I get something totally different.

ResultSet[ exhausted: false, Columns[[applied](boolean)]]

Is this expected behavior? Is there a way to get the data "inserted" by cassandra in the table in the ResultSet returned by execute method?

Usually, the INSERT doesn't return the inserted values back to user. The exception is insert that triggers lightweight transaction - if you use IF NOT EXISTS. In this case, it may return:

1. single row with single column [applied] with true value - this means that data were inserted;

cqlsh:test> insert into test.u2(id,u) values(5, {id:1, t1:3}) if not exists;

 [applied]
-----------
      True

2. single row with all values of the corresponding row of the table, plus column [applied] with false value - this happens when row with given primary key already exists.

cqlsh:test> insert into test.u2(id,u) values(1, {id:1, t1:2});
cqlsh:test> insert into test.u2(id,u) values(1, {id:1, t1:3}) if not exists;

 [applied] | id | u
-----------+----+----------------
     False |  1 | {id: 1, t1: 2}