CREATE TABLE test ( partitionkey text, rowkey text, date timestamp, policyid text, policyname text, primary key (partitionkey, rowkey));
First of all, you really should use more descriptive column names instead of partitionkey and rowkey (and even date, for that matter). By looking at those column names, I really can't tell what kind of data this table is supposed to be indexed by.
select * from test where partitionkey='p1' and date > '2007-01-02';
Bad Request: No indexed columns present in by-columns clause with Equal operator
As for this issue, try making your "date" column a part of your primary key.
primary key (partitionkey, rowkey, date)
Once you do that, I think your date range queries will function appropriately.
For more information on this, check out DataStax Academy's (free) course called Java Development With Apache Cassandra. Session 5, Module 104 discusses how to model time series data and that should help you out.