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https://issues.apache.org/jira/browse/HIVE-16029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Lin reassigned HIVE-16029:
-------------------------------
> COLLECT_SET and COLLECT_LIST does not return NULL in the result
> ---------------------------------------------------------------
>
> Key: HIVE-16029
> URL: https://issues.apache.org/jira/browse/HIVE-16029
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.1.1
> Reporter: Eric Lin
> Assignee: Eric Lin
> Priority: Minor
>
> See the test case below:
> 0: jdbc:hive2://localhost:10000/default> select * from collect_set_test;
> +---------------------+
> | collect_set_test.a |
> +---------------------+
> | 1 |
> | 2 |
> | NULL |
> | 4 |
> | NULL |
> +---------------------+
> 0: jdbc:hive2://localhost:10000/default> select collect_set(a) from
> collect_set_test;
> +---------------+
> | _c0 |
> +---------------+
> | [1,2,4] |
> +---------------+
> The correct result should be:
> 0: jdbc:hive2://localhost:10000/default> select collect_set(a) from
> collect_set_test;
> +---------------+
> | _c0 |
> +---------------+
> | [1,2,null,4] |
> +---------------+
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