Home/ Questions/Q 7648981
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-31T10:51:05+00:00

Is there any way to prevent the CQL command Update from creating a new

  • 0

Is there any way to prevent the CQL command Update from creating a new row if the row key ‘row1’ doesn’t exist?

UPDATE columnfamily SET data = 'test data' WHERE key = 'row1';
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Update 2015-04-10:

    As of Cassandra 2.0 you can use light weight transactions to accomplish this. Be aware that although they are called “light weight” these queries require a lot more work to be done on the Cassandra cluster.

    Thanks to @BSB for the update.

    Pre 2.0 answer:

    No. Unlike in SQL, in CQL Update and insert are semantically the same. You would have to do a read first to determine the existence of the row.

    • 0