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    <p>There is no "IN"-type query in the Thrift API. You could perform a series of <code>get</code> queries for each composite column value (<code>day_of_year</code>, <code>minute_of_day</code>, <code>event_id</code>). </p> <p>If your <code>event_id</code>s were sequential (and your question says they are not) you could perform a single <code>get_slice</code> query, passing in the range (e.g., <code>day_of_year</code>, <code>minute_of_day</code>, and range of <code>event_id</code>s). You could grab bunches of them in this way and filter the response programatically yourself (e.g., grab all data on the date with event ids between 4-3433). More data transfer, more processing on the client side so not a great option unless you really are looking for a range.</p> <p>So, if you want to use "IN" with Cassandra you will need to switch to a CQL-based solution. If you are considering using CQL in python another option is <a href="https://code.google.com/a/apache-extras.org/p/cassandra-dbapi2/" rel="nofollow">cassandra-dbapi2</a>. This worked for me:</p> <pre><code>import cql # Replace settings as appropriate host = 'localhost' port = 9160 keyspace = 'keyspace_name' # Connect connection = cql.connect(host, port, keyspace, cql_version='3.0.1') cursor = connection.cursor() print "connected!" # Execute CQL cursor.execute("select * from data_bucket where day_of_year = 266 and minute_of_day = 244 and event_id in (4, 7, 11, 1990, 3433)") for row in cursor: print str(row) # Do something with your data # Shut the connection cursor.close() connection.close() </code></pre> <p>(Tested with Cassandra 2.0.1.)</p>
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    1. POComposite columns and "IN" relation in Cassandra
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    1. POComposite columns and "IN" relation in Cassandra
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    1. COIt works in CQL, but as I mentioned in my question, I'm looking for a solution without it.
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    2. COIf you don't want to use CQL are you looking for a Thrift or CLI-based alternative? [Cassandra's own recommendation is to use CQL-based clients](http://wiki.apache.org/cassandra/ClientOptions). The solution proposed will allow you to build any CQL-based query (the string passed to `cursor.execute`) and execute it programatically using the cassandra-dbapi2 client.
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    3. COI have to integrate with an existing codebase that uses Astyanax without CQL. And while I could possibly push towards CQL, I am quite curious in figuring out how this works under the covers via Thrift.
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