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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4511) Secondary index support for CQL3 collections
Date Sat, 16 Nov 2013 19:11:21 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13824588#comment-13824588
] 

Jonathan Ellis commented on CASSANDRA-4511:
-------------------------------------------

I'm struggling to think of a use case for indexing map keys. /cc [~pmcfadin] [~tupshin]

Also, it occurs to me that we don't need to add new syntax if we did this instead:

{code}
SELECT * FROM myTable WHERE 'awesome' IN tags;
{code}

> Secondary index support for CQL3 collections 
> ---------------------------------------------
>
>                 Key: CASSANDRA-4511
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4511
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 1.2.0 beta 1
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 2.1
>
>         Attachments: 4511.txt
>
>
> We should allow to 2ndary index on collections. A typical use case would be to add a
'tag set<String>' to say a user profile and to query users based on what tag they have.



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