set a value to null in cassandra with cql

Question

How can I set a value of a row to null in cassandra? For example I have a table like this:

CREATE TABLE instruments (
                                              code text,
                                              ric text,
                                              primary key (code)
                                            )

if I want an element to have a particular ric:

update instruments set ric='test' where code='code';

But what about setting ric to None?

Answer 1

It might be done with DELETE CQL command:

DELETE ric FROM instruments WHERE code='code';

Answer 2

You can also use the value null in your queries. This was added last year to CQL.

update keyspace.table set ric=null where code='code';

You can also use null in insert statements, but if you omit the value it's the same as saying null so there's no point.