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https://issues.apache.org/jira/browse/KYLIN-976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hongbin ma resolved KYLIN-976.
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Resolution: Fixed
> Support Custom Aggregation Types
> --------------------------------
>
> Key: KYLIN-976
> URL: https://issues.apache.org/jira/browse/KYLIN-976
> Project: Kylin
> Issue Type: Wish
> Components: Job Engine, Query Engine
> Reporter: Luke Han
> Assignee: hongbin ma
> Fix For: v2.1, v1.3
>
>
> Currently, Kylin supports 6 basic aggregation measure functions:
> Min/Max/Sum/Count/Avg/DistinctCount
> But there are also many other cases require to support more complicate
> measure expression, for example:
> COUNT(CASE WHEN so.ft = 'fv' THEN soi.sc ELSE NULL END) or Sum(if...)
> Or even more complicated measures like TopN and RawRecords
> To open this JIRA to tracking further implementation
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