[
https://issues.apache.org/jira/browse/CASSANDRA-9977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15058298#comment-15058298
]
Sylvain Lebresne commented on CASSANDRA-9977:
---------------------------------------------
bq. Want to say: you no longer have a counter but just a value which is then
"independent" from its origin
That's pretty ill defined though. When you read a counter directly, you also
get "just a value". For all intent and purposes, we could have return
{{bigint}} for a raw select of a counter, but we don't, so let's be consistent
and preserve the {{counter}} type by default. And as Benjamin mention, if you
use the {{max}} function for instance, your "intuition" doesn't really hold
anymore.
I'll note that if people really care about getting a {{bigint}}, they can
always cast the return (haven't checked if we allow casting a counter to a
bigint but if we don't, we should) so its not like we're losing anything.
Chances are, almost no-one will notice however.
> 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}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
