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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-15685) count(distinct) generates different result than expected
Date Fri, 20 Jan 2017 22:21:26 GMT
Pengcheng Xiong created HIVE-15685:
--------------------------------------

             Summary: count(distinct) generates different result than expected
                 Key: HIVE-15685
                 URL: https://issues.apache.org/jira/browse/HIVE-15685
             Project: Hive
          Issue Type: Bug
            Reporter: Pengcheng Xiong
            Assignee: Pengcheng Xiong


Following query with count(distinct) generates different result than expected on hive master:
{noformat}
select count(distinct ss_ticket_number), count(distinct ss_sold_date_sk) from store_sales;
{noformat}

Expected output generated using postgres:
{noformat}
select count(distinct ss_ticket_number), count(distinct ss_sold_date_sk) from store_sales;
 count  | count 
--------+-------
 240000 |  1823
(1 row)
{noformat}

Actual output
{noformat}
240000	1824
{noformat}



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