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https://issues.apache.org/jira/browse/HIVE-287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720917#action_12720917
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Namit Jain commented on HIVE-287:
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You need to use an alias for the sub-query
select count(1) from (select product_url, name, count(1) from raw_product group
by product_url, name)x
> count distinct on multiple columns does not work
> ------------------------------------------------
>
> Key: HIVE-287
> URL: https://issues.apache.org/jira/browse/HIVE-287
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
>
> The following query does not work:
> select count(distinct col1, col2) from Tbl
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