DOAN DuyHai created CASSANDRA-11538:
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             Summary: Give secondary index on partition column the same 
treatment as static column
                 Key: CASSANDRA-11538
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11538
             Project: Cassandra
          Issue Type: Improvement
          Components: CQL
         Environment: Cassandra 3.4
            Reporter: DOAN DuyHai
            Priority: Minor


For index on static column, in the index table we store:

- partition key = base table static column value
- clustering =  base table complete partition key (as a single value)


The way we handle index on partition column is different, we store:

- partition key = base table partition column value
- clustering 1 = base table complete partition key (as a single value)
- clustering 2 ... N+1 = N clustering values of the base table

It is more consistent to give partition column index the same treatment as the 
one for static column



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