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https://issues.apache.org/jira/browse/CASSANDRA-10124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14713620#comment-14713620
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Sam Tunnicliffe commented on CASSANDRA-10124:
---------------------------------------------

bq.  I'm not convinced that USING INDEX should automatically remove the need 
for ALLOW FILTERING

That's why I added  
bq.  Perhaps the ALLOW FILTERING override could be dependent on all the 
restrictions being able to besatisfied by the specified index

> Full support for multi-column and per-row indexes
> -------------------------------------------------
>
>                 Key: CASSANDRA-10124
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10124
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>              Labels: client-impacting
>             Fix For: 3.0 beta 2
>
>
> Since CASSANDRA-6717 decoupled a secondary index from a single column, we can 
> expand support for indexes with multiple target columns and for row-based 
> indexes with truly dynamic targets.  
> Much of the plumbing for this has been done in CASSANDRA-7771, CASSANDRA-6717 
> & by the API rework in CASSANDRA-9459. What remains is:
> * Decide on syntax for DDL statements
> * Decide on WHERE clause syntax for SELECT (there is some discussion on this 
> in the comments of CASSANDRA-9459)



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