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From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11310) Allow filtering on clustering columns for queries without secondary indexes
Date Wed, 09 Mar 2016 16:34:40 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15187360#comment-15187360
] 

Alex Petrov commented on CASSANDRA-11310:
-----------------------------------------

Thanks once again for the pointer! 

I somehow thought that it's possible to restrict everything by the bounds, which I thought
of restricting on the both ends, but in the retrospect I understand that it was a rather bad
idea.
I've implemented a "stupid" prototype that works for cases like {{SELECT * FROM %s WHERE b
> 20 and c > 30 ALLOW FILTERING}}, so at least it's clear what to do now.

I'm not sure how fast I can pull it out, but I'll do my best.

> Allow filtering on clustering columns for queries without secondary indexes
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-11310
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11310
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>            Reporter: Benjamin Lerer
>            Assignee: Alex Petrov
>              Labels: doc-impacting
>             Fix For: 3.x
>
>
> Since CASSANDRA-6377 queries without index filtering non-primary key columns are fully
supported.
> It makes sense to also support filtering on clustering-columns.
> {code}
> CREATE TABLE emp_table2 (
> empID int,
> firstname text,
> lastname text,
> b_mon text,
> b_day text,
> b_yr text,
> PRIMARY KEY (empID, b_yr, b_mon, b_day));
> SELECT b_mon,b_day,b_yr,firstname,lastname FROM emp_table2
> WHERE b_mon='oct' ALLOW FILTERING;
> {code}



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