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CQL: All content tagged as CQL in NoSQL databases and polyglot persistence

Cassandra CQL and the IN operator

The most succint description of how to use IN in CQL:

  1. The last column in the partition key, assuming the = operator is used on the first N-1 columns of the partition key
  2. The last clustering column, assuming the = operator is used on the first N-1 clustering columns and all partition keys are restricted
  3. The last clustering column, assuming the = operator is used on the first N-1 clustering columns and ALLOW FILTERING is specified

I like clear rules.

Original title and link: Cassandra CQL and the IN operator (NoSQL database©myNoSQL)

via: http://planetcassandra.org/blog/post/the-in-operator-in-cassandra-cql


CQL: SQL for Cassandra with Eric Evans - NoSQL videos

The fine folks from DataStax have made available the presentations from their Cassandra NYC 2011 event.

The first video to post here is Eric Evans’s presentation on Cassandra Query Language.


Reference Cards for Cassandra CLI, Nodetool, and CQL Available for Download

If you’re like me and sometimes struggle to remember the particular syntax for a CQL or Cassandra nodetool or CLI command, we’ve got something for you that might help. You can now download reference cards for CQL, along with the Cassandra CLI and nodetool.

I’m more of the type that refreshes his memory with Google or pocket guides, but I know refcards are useful too. These ones from DataStax are nicely designed—maybe not optimal for printing though.

Original title and link: Reference Cards for Cassandra CLI, Nodetool, and CQL Available for Download (NoSQL database©myNoSQL)

via: http://www.datastax.com/dev/blog/new-cassandracql-reference-cards-ready-for-download


Cassandra Query Language: Not Just NoSQL. It’s MoSQL

Cassandra 0.8 included the first version of Cassandra Query Language or CQL. Eric Evans gave a talk at Cassandra SF 2011 introducing Cassandra Query Language as an alternative and not replacement of the current Cassandra API: