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https://issues.apache.org/jira/browse/CASSANDRA-9977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15067842#comment-15067842
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Benjamin Lerer commented on CASSANDRA-9977:
-------------------------------------------
I have just have 2 small nits:
* It will be nice to also test {{sum}} in the unit tests.
* You can use {{CQLTester.flush()}} instead of
{{StorageService.instance.forceKeyspaceFlush}}
Could you schedule another run for trunk as well for extra safety?
> Support counter-columns for native aggregates (sum,avg,max,min)
> ---------------------------------------------------------------
>
> Key: CASSANDRA-9977
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9977
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL
> Reporter: Noam Liran
> Assignee: Robert Stupp
> Fix For: 2.2.x
>
>
> When trying to SUM a column of type COUNTER, this error is returned:
> {noformat}
> InvalidRequest: code=2200 [Invalid query] message="Invalid call to function
> sum, none of its type signatures match (known type signatures: system.sum :
> (tinyint) -> tinyint, system.sum : (smallint) -> smallint, system.sum : (int)
> -> int, system.sum : (bigint) -> bigint, system.sum : (float) -> float,
> system.sum : (double) -> double, system.sum : (decimal) -> decimal,
> system.sum : (varint) -> varint)"
> {noformat}
> This might be relevant for other agg. functions.
> CQL for reproduction:
> {noformat}
> CREATE TABLE test (
> key INT,
> ctr COUNTER,
> PRIMARY KEY (
> key
> )
> );
> UPDATE test SET ctr = ctr + 1 WHERE key = 1;
> SELECT SUM(ctr) FROM test;
> {noformat}
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