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https://issues.apache.org/jira/browse/CASSANDRA-11372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15216230#comment-15216230
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Aleksey Yeschenko commented on CASSANDRA-11372:
-----------------------------------------------

LGTM

> Make CQL grammar more easily extensible 
> ----------------------------------------
>
>                 Key: CASSANDRA-11372
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11372
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>            Reporter: Mike Adamson
>            Assignee: Mike Adamson
>             Fix For: 3.x
>
>
> The CQL grammar ({{Cql.g}}) is currently a composite grammar and, as such, is 
> not easy to extend.
> We now have a number of 3rd parties who are extending the grammar (custom 
> index grammars, for example) and it would be helpful if the grammar could be 
> split in a parser and lexer in order to make extension easier.



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