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https://issues.apache.org/jira/browse/CASSANDRA-10707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15169740#comment-15169740
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Benjamin Lerer commented on CASSANDRA-10707:
--------------------------------------------
I have pushed a set of commits to address the different review points.
I have not changed the CQL syntax so far.
I did not rename {{CqlGroupByLimits}} as it is only used for {{GROUP BY}}
queries and not for aggregate queries (queries with aggregates but no group
by). I also did not rename {{GroupMaker}} as the class is really about creating
groups, but I am fully open to discussion.
I noticed that {{{CQLLimits.forShortReadRetry()}} does not provide any limit on
the number of rows either.
> Add support for Group By to Select statement
> --------------------------------------------
>
> Key: CASSANDRA-10707
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10707
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL
> Reporter: Benjamin Lerer
> Assignee: Benjamin Lerer
>
> Now that Cassandra support aggregate functions, it makes sense to support
> {{GROUP BY}} on the {{SELECT}} statements.
> It should be possible to group either at the partition level or at the
> clustering column level.
> {code}
> SELECT partitionKey, max(value) FROM myTable GROUP BY partitionKey;
> SELECT partitionKey, clustering0, clustering1, max(value) FROM myTable GROUP
> BY partitionKey, clustering0, clustering1;
> {code}
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