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From "Ashot Golovenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-6220) Unable to select multiple entries using In clause on clustering part of compound key
Date Sun, 20 Oct 2013 20:04:41 GMT
Ashot Golovenko created CASSANDRA-6220:
------------------------------------------

             Summary: Unable to select multiple entries using In clause on clustering part
of compound key
                 Key: CASSANDRA-6220
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6220
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Ashot Golovenko


I have the following table:

CREATE TABLE rating (
    id bigint,
    mid int,
    hid int,
    r double,
    PRIMARY KEY ((id, mid), hid));

And I get really really strange result sets on the following queries:

cqlsh:bm> SELECT hid, r FROM rating WHERE id  = 755349113 and mid = 201310 and hid = 201329320;

 hid       | r
-----------+--------
 201329320 | 45.476

(1 rows)

cqlsh:bm> SELECT hid, r FROM rating WHERE id  = 755349113 and mid = 201310 and hid = 201329220;

 hid       | r
-----------+-------
 201329220 | 53.62

(1 rows)

cqlsh:bm> SELECT hid, r FROM rating WHERE id  = 755349113 and mid = 201310 and hid in (201329320,
201329220);

 hid       | r
-----------+--------
 201329320 | 45.476  <-- WRONG - only one result

As you can see although both records exist I'm not able the fetch all of them using in clause.
By now I have to cycle my requests which are about 30 and I find it highly inefficient given
that I query physically the same row. 

Ideally I'd like the following select to work:
SELECT hid, r FROM rating WHERE id  = 755349113 and mid in ? and hid in ?;
Which doesn't work either.





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