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https://issues.apache.org/jira/browse/CALCITE-6164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17796495#comment-17796495
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Caican Cai commented on CALCITE-6164:
-------------------------------------

I think this test will not cause errors in the future. This test mainly 
reflects the rewrite rules of calcite.

> add testPushDownProjectAggregateWithAvg on CsvTest
> --------------------------------------------------
>
>                 Key: CALCITE-6164
>                 URL: https://issues.apache.org/jira/browse/CALCITE-6164
>             Project: Calcite
>          Issue Type: Test
>          Components: tests
>    Affects Versions: 1.36.0
>         Environment: linux+java
>            Reporter: Caican Cai
>            Priority: Trivial
>              Labels: pull-request-available
>             Fix For: 1.37.0
>
>
> The avg operator in the agg operator is actually different from the 
> aggregation operators such as max and count, because avg will be split into 
> count/avg. I think the avg operator can be formed into a separate test
> I have observed that some other open source projects display avg tests 
> separately, e.g: spark sql



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