Beginning with SAS^® 9.4M6, CALL IS8601_CONVERT does not always compute durations correctly. See the Full Code tab for a sample code.

 

Operating System and Release Information

Product Family	Product	System	SAS Release
			Reported	Fixed*
SAS System	Base SAS	Windows 7 Home Premium 32 bit	9.4 TS1M6
		Windows 7 Home Premium x64	9.4 TS1M6
		Windows 7 Professional 32 bit	9.4 TS1M6
		Windows 7 Ultimate 32 bit	9.4 TS1M6
		Windows 7 Professional x64	9.4 TS1M6
		Windows 7 Ultimate x64	9.4 TS1M6
		64-bit Enabled AIX	9.4 TS1M6
		Microsoft Windows Server 2012 Datacenter	9.4 TS1M6
		Microsoft Windows Server 2008 R2	9.4 TS1M6
		Microsoft Windows Server 2008 for x64	9.4 TS1M6
		Microsoft Windows Server 2012 R2 Datacenter	9.4 TS1M6
		Microsoft Windows Server 2012 R2 Std	9.4 TS1M6
		Microsoft Windows Server 2012 Std	9.4 TS1M6
		Microsoft Windows Server 2016	9.4 TS1M6
		Microsoft Windows Server 2019	9.4 TS1M6
		Windows 7 Enterprise 32 bit	9.4 TS1M6
		Windows 7 Enterprise x64	9.4 TS1M6
		Microsoft Windows Server 2008	9.4 TS1M6
		Microsoft Windows 10	9.4 TS1M6
		Microsoft Windows 8.1 Pro x64	9.4 TS1M6
		Microsoft Windows 8.1 Pro 32-bit	9.4 TS1M6
		Microsoft Windows 8.1 Enterprise x64	9.4 TS1M6
		Microsoft Windows 8.1 Enterprise 32-bit	9.4 TS1M6
		Microsoft Windows 8 Pro x64	9.4 TS1M6
		Microsoft Windows 8 Pro 32-bit	9.4 TS1M6
		Microsoft Windows 8 Enterprise x64	9.4 TS1M6
		Microsoft Windows 8 Enterprise 32-bit	9.4 TS1M6
		Microsoft® Windows® for x64	9.4 TS1M6
		z/OS 64-bit	9.4 TS1M6
		z/OS	9.4 TS1M6
		64-bit Enabled Solaris	9.4 TS1M6
		HP-UX IPF	9.4 TS1M6
		Linux for x64	9.4 TS1M6
		Solaris for x64	9.4 TS1M6

* 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.

Beginning with SAS 9.4M6, durations aren't always computed properly with CALL IS8601_CONVERT. In this example, the duration is computed for the AESTDT and AEENDT variables, and the result is stored in the AEDUR variable. To view the results, see the Output tab.

---

DATA duration2;
INFILE datalines truncover;
LENGTH aedur aestdt aeendt $ 32;
INPUT @1 aestdt :$N8601E8. aeendt :$N8601E8.;
CALL IS8601_CONVERT('dt/dt','du',aestdt,aeendt,aedur);
aestdt_unf = aestdt;
aeendt_unf = aeendt;
FORMAT aestdt aeendt aedur $N8601E.;
DATALINES;
2022-12-30 2023-02-28
2022-12-30 2023-03-01
2021-12-29 2022-02-28
2021-12-29 2022-03-01
2021-12-28 2022-02-28
2021-12-28 2022-03-01
;
RUN;

Aestdt      Aeendt    Aedur

2022-12-30 2023-02-28 P2M
2022-12-30 2023-03-01 P2M15D **** This is obviously incorrect
2021-12-29 2022-02-28 P2M
2021-12-29 2022-03-01 P2M
2021-12-28 2022-02-28 P2M
2021-12-28 2022-03-01 P2M1D

A fix for this issue for Base SAS 9.4_M8 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/L8X.html#70048

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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#70048

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A fix for this issue for Base SAS 9.4_M6 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/D9T.html#70048

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Type:	Problem Note
Priority:	medium
Topic:	SAS Reference ==> CALL routines ==> IS8601_CONVERT

Date Modified:	2023-05-01 12:11:37
Date Created:	2023-04-25 14:49:41