Check CQL version with Cassandra and cqlsh?

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There are a couple of ways to go about this.

From within cqlsh, you can simply show version.

aploetz@cqlsh> show version
[cqlsh 5.0.1 | Cassandra 2.1.8 | CQL spec 3.2.0 | Native protocol v3]

However, that only works from within cqlsh. Fortunately, you can also query system.local for that information as well.

aploetz@cqlsh> SELECT cql_version FROM system.local;

 cql_version
-------------
       3.2.0

(1 rows)

The system.local table has other useful bits of information about your current node, cluster, and Cassandra tool versions as well. For more info, check it out with either SELECT * FROM system.local; (only has 1 row) or desc table system.local.

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