[jira] [Created] (CASSANDRA-17704) Cannot specify ORDER BY of clustering columns after IN-clause constraints on clustering prefix

["Abe Ratnofsky (Jira)" <ji...@apache.org>]

Abe Ratnofsky created CASSANDRA-17704:
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             Summary: Cannot specify ORDER BY of clustering columns after IN-clause constraints on clustering prefix
                 Key: CASSANDRA-17704
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17704
             Project: Cassandra
          Issue Type: Bug
          Components: CQL/Semantics, Documentation
            Reporter: Abe Ratnofsky


When a user specifies a partition key and clustering key prefix with equality predicates, C* supports sorting by the next clustering key (CASSANDRA-10271):
SELECT * FROM tbl WHERE pk = 1 AND ck1 = 1 ORDER BY ck2;
 
When a user specifies a partition key with a set-membership predicate, C* supports sorting by the next clustering key (requires merge sort of results for each pk):
SELECT * FROM tbl WHERE pk IN (1, 2) ORDER BY ck1;
 
But when a user specifies a partition key with an equality predicate and a clustering key prefix with a set membership predicate, C* *does not* support sorting by the next clustering key:
SELECT * FROM tbl WHERE pk = 1 AND ck1 IN (1, 2) ORDER BY ck2;

org.apache.cassandra.exceptions.InvalidRequestException: Order by currently only supports the ordering of columns following their declared order in the PRIMARY KEY
 
This last situation requires a merge sort, but so does the multi-pk situation.
 
The docs seem to indicate that this pattern is supported, as well: https://docs.datastax.com/en/cql-oss/3.3/cql/cql_using/useQueryIN.html



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