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https://issues.apache.org/jira/browse/HIVE-20779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16691120#comment-16691120
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Igor Kryvenko commented on HIVE-20779:
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[~kgyrtkirk] Hi Zoltan. Now I got 2 instead of expected 1. Is it okay?
> Fix missing results when IN operator has a struct with a null field
> -------------------------------------------------------------------
>
> Key: HIVE-20779
> URL: https://issues.apache.org/jira/browse/HIVE-20779
> Project: Hive
> Issue Type: Bug
> Reporter: Zoltan Haindrich
> Assignee: Igor Kryvenko
> Priority: Major
>
> {code}
> create table ax(s char(1),t char(10));
> insert into ax values ('a','a'),('a','a '),('b','bb');
> select 'expected 1',count(*) from ax where ((s,t) in (('a','a'),(null,
> 'bb'))) is null;
> -- returns 0 rows
> {code}
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