In SAS^® 9.4M7 (TS1M7), it is possible that certain SQL procedure queries that use the Median summary function to compute the median of a column might generate incorrect results.

With this issue, there are two specific scenarios in which the inconsistent median values are generated. However, there are other possible scenarios in which the median might be computed incorrectly. Two types of queries with which problems have been found are listed here:

• PROC SQL queries that use the Median aggregate function to compute the median of a column and to create an SQL view
• PROC SQL queries that use the Median summary function while also remerging summary statistics with the original data

Click the Hot Fix tab in this note to access the hot fix for this issue.

Operating System and Release Information

Product Family	Product	System	Product Release		SAS Release
			Reported	Fixed*	Reported	Fixed*
SAS System	Base SAS	z/OS	9.4_M7		9.4 TS1M7
		z/OS 64-bit	9.4_M7		9.4 TS1M7
		Microsoft® Windows® for x64	9.4_M7		9.4 TS1M7
		Microsoft Windows 8 Enterprise 32-bit	9.4_M7		9.4 TS1M7
		Microsoft Windows 8 Enterprise x64	9.4_M7		9.4 TS1M7
		Microsoft Windows 8 Pro 32-bit	9.4_M7		9.4 TS1M7
		Microsoft Windows 8 Pro x64	9.4_M7		9.4 TS1M7
		Microsoft Windows 8.1 Enterprise 32-bit	9.4_M7		9.4 TS1M7
		Microsoft Windows 8.1 Enterprise x64	9.4_M7		9.4 TS1M7
		Microsoft Windows 8.1 Pro 32-bit	9.4_M7		9.4 TS1M7
		Microsoft Windows 8.1 Pro x64	9.4_M7		9.4 TS1M7
		Microsoft Windows 10	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2008	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2008 R2	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2008 for x64	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2012 Datacenter	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2012 R2 Datacenter	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2012 R2 Std	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2012 Std	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2016	9.4_M7		9.4 TS1M7
		Microsoft Windows Server 2019	9.4_M7		9.4 TS1M7
		Windows 7 Enterprise 32 bit	9.4_M7		9.4 TS1M7
		Windows 7 Enterprise x64	9.4_M7		9.4 TS1M7
		Windows 7 Home Premium 32 bit	9.4_M7		9.4 TS1M7
		Windows 7 Home Premium x64	9.4_M7		9.4 TS1M7
		Windows 7 Professional 32 bit	9.4_M7		9.4 TS1M7
		Windows 7 Professional x64	9.4_M7		9.4 TS1M7
		Windows 7 Ultimate 32 bit	9.4_M7		9.4 TS1M7
		Windows 7 Ultimate x64	9.4_M7		9.4 TS1M7
		64-bit Enabled AIX	9.4_M7		9.4 TS1M7
		64-bit Enabled Solaris	9.4_M7		9.4 TS1M7
		HP-UX IPF	9.4_M7		9.4 TS1M7
		Linux for x64	9.4_M7		9.4 TS1M7
		Solaris for x64	9.4_M7		9.4 TS1M7

* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.

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Viya on Linux: An update for this issue is available for SAS Viya 3.5. For instructions on how to access and apply software updates, see the Updating Your SAS Viya software section in the SAS Viya 3.5 for Linux Deployment Guide at

http://documentation.sas.com/?softwareId=administration&softwareVersion=3.5&softwareContextId=softwareUpdates

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A fix for this issue for Base SAS 9.4_M7 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/I9R.html#66896

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Using the Median summary function with a Create View query or one that remerges summary statistics might compute the median incorrectly.

Type:	Problem Note
Priority:	high

Date Modified:	2020-11-06 10:08:37
Date Created:	2020-11-05 10:41:03