The implementation of secondary indexes on static columns relies on the
fact that the index table only includes partition key columns of the
base table, but not clustering key columns. A static column's value
determines a set of full partitions, so including the clustering key
would only be redundant. It would also generate more work as a single
static column update would require a large portion of the index to be
updated.
This commit makes sure that clustering columns are not included in the
index table for indexes based on a static column.
983b440a81