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From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-11310) Allow filtering on clustering columns for queries without secondary indexes
Date Wed, 09 Mar 2016 14:31:40 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15187154#comment-15187154
] 

Alex Petrov edited comment on CASSANDRA-11310 at 3/9/16 2:31 PM:
-----------------------------------------------------------------

I hope I'm not bugging you with questions too much. 
It looks like it all requires changes to {{MultiCBuilder}}, since at the moment only a single
slice is allowed, and it always has to be the "last" one, as either {{buildBoundForSlice}}
or {{buildBound}} is returned in {{PrimaryKeyRestrictionSet::boundsAsClustering}}. At least
for the cases with slices over multiple columns, such as {{SELECT * FROM myTable WHERE b <
3 AND c <= 4}}.
Thank you for your help.


was (Author: ifesdjeen):
I hope I'm not bugging you with questions too much. 
It looks like it all requires changes to {{MultiCBuilder}}, since at the moment only a single
slice is allowed, and it always has to be the "last" one, as either {{buildBoundForSlice}}
or {{buildBound}} is returned in {{PrimaryKeyRestrictionSet::boundsAsClustering}}. At least
for the cases with slices over multiple columns, such as `SELECT * FROM myTable WHERE b <
3 AND c <= 4`.
Thank you for your help.

> 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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