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https://issues.apache.org/jira/browse/ASTERIXDB-2403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xikui Wang reassigned ASTERIXDB-2403:
-------------------------------------
Assignee: Xikui Wang
> Group-by can produce empty array result
> ---------------------------------------
>
> Key: ASTERIXDB-2403
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2403
> Project: Apache AsterixDB
> Issue Type: Bug
> Reporter: Xikui Wang
> Assignee: Xikui Wang
> Priority: Major
>
> Following query can produce a empty list. If we put this query into a
> sub-query and insert it into dataset with auuid, this can cause a meaningless
> record.
> {code}
> drop dataverse test if exists;
> create dataverse test;
> use test;
> create type testType as open {
> id : int64
> };
> create dataset testDataset(testType) primary key id;
> use test;
> let val1=(select country, count(*) from testDataset group by country)
> select val1;
> {code}
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