title: Cassandra default column value cqlsh
body: <p>I am very new to Cassandra, and using the cqlsh to try out basic queries. I want to alter a table by inserting a new column with a default value (say 0). This is same as <a href="https://stackoverflow.com/questions/19155691/cassandra-can-i-have-default-value-for-a-column-like-sql">this SO question</a>, the difference being I am trying to do it from cqlsh, so can't run an insert command on 50,000 rows. Is there a "cqlish" way to achieve this?</p>