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From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-11310) Allow filtering on clustering columns for queries without secondary indexes
Date Tue, 19 Apr 2016 10:25:25 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-11310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alex Petrov updated CASSANDRA-11310:
------------------------------------
    Reviewer: Sam Tunnicliffe  (was: Benjamin Lerer)
      Status: Patch Available  (was: Reopened)

The problem was more or less along the lines as described yesterday: some queries that did
require filtering did not set the {{usesSecondaryIndexing}} flag correctly. In {{StatementRestrictions}},
only order was checked therefore some subtle corner cases were still sneaking in (when order
is correct although flag still needs to be set). Right now, {{ClusteringColumnRestrictions::needsFiltering}}
is called, which makes rules consistent. 

{{hasContains}} check was removed since it's redundant and is already done in {{ClusteringColumnRestrictions::needsFiltering}}.


|[trunk|https://github.com/ifesdjeen/cassandra/tree/11310-followup-trunk]|[utest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-11310-followup-trunk-testall/]|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-11310-followup-trunk-dtest/]|

Tests are currently running.

> 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: 3.6
>
>
> 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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