Beginning with the SAS 9.4M7 release, the NVALID function accepts a value of UPCASE for the second argument. If the second argument is omitted, the value of the VALIDVARNAME system option is used to make the determination.

In earlier SAS releases, the UPCASE argument did not provide correct results.

Operating System and Release Information

Product Family	Product	System	Product Release		SAS Release
			Reported	Fixed*	Reported	Fixed*
SAS System	SAS Viya	Microsoft Windows 2000 Datacenter Server	3.0		Viya
		Microsoft Windows 2000 Advanced Server	3.0		Viya
		Microsoft Windows 95/98	3.0		Viya
		Microsoft Windows 8.1 Pro 32-bit	3.0		Viya
		Microsoft Windows 8.1 Enterprise x64	3.0	2020.1	Viya	Viya
		Microsoft Windows 8.1 Enterprise 32-bit	3.0		Viya
		Microsoft Windows 8 Pro x64	3.0	2020.1	Viya	Viya
		Microsoft Windows 8 Pro 32-bit	3.0		Viya
		Microsoft Windows 8 Enterprise x64	3.0	2020.1	Viya	Viya
		Microsoft Windows 8 Enterprise 32-bit	3.0		Viya
		Microsoft® Windows® for x64	3.0	2020.1	Viya	Viya
		Microsoft Windows 10	3.0	2020.1	Viya	Viya
		Microsoft Windows 8.1 Pro x64	3.0	2020.1	Viya	Viya
		Microsoft Windows 2000 Server	3.0		Viya
		Microsoft Windows 2000 Professional	3.0		Viya
		Microsoft Windows NT Workstation	3.0		Viya
		Microsoft Windows Server 2003 Datacenter Edition	3.0		Viya
		Microsoft Windows Server 2003 Enterprise Edition	3.0		Viya
		Microsoft Windows Server 2003 Standard Edition	3.0		Viya
		Microsoft Windows Server 2003 for x64	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2008	3.0		Viya
		Microsoft Windows Server 2008 R2	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2008 for x64	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2012 Datacenter	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2012 R2 Datacenter	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2012 R2 Std	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2012 Std	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2016	3.0	2020.1	Viya	Viya
		Microsoft Windows Server 2019	3.0	2020.1	Viya	Viya
		Microsoft Windows XP Professional	3.0		Viya
		Windows 7 Enterprise 32 bit	3.0		Viya
		Windows 7 Enterprise x64	3.0	2020.1	Viya	Viya
		Windows 7 Home Premium 32 bit	3.0		Viya
		Windows 7 Home Premium x64	3.0	2020.1	Viya	Viya
		Windows 7 Professional 32 bit	3.0		Viya
		Windows 7 Professional x64	3.0	2020.1	Viya	Viya
		Windows 7 Ultimate 32 bit	3.0		Viya
		Windows 7 Ultimate x64	3.0	2020.1	Viya	Viya
		Windows Millennium Edition (Me)	3.0		Viya
		Windows Vista	3.0		Viya
		Windows Vista for x64	3.0	2020.1	Viya	Viya
		Linux for x64	3.0	2020.1	Viya	Viya
SAS System	Base SAS	Solaris for x64	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		OpenVMS on HP Integrity	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		Linux	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		HP-UX IPF	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		64-bit Enabled Solaris	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		64-bit Enabled HP-UX	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		64-bit Enabled AIX	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		Windows Vista for x64	9.2		9.2 TS1M0
		Microsoft® Windows® for x64	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		Microsoft Windows XP 64-bit Edition	9.2		9.2 TS1M0
		Microsoft Windows Server 2003 Enterprise 64-bit Edition	9.2		9.2 TS1M0
		Microsoft Windows Server 2003 Datacenter 64-bit Edition	9.2		9.2 TS1M0
		Linux for x64	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		Windows Vista	9.2		9.2 TS1M0
		Microsoft Windows XP Professional	9.2		9.2 TS1M0
		Microsoft Windows Server 2003 Standard Edition	9.2		9.2 TS1M0
		Microsoft Windows Server 2003 Enterprise Edition	9.2		9.2 TS1M0
		Microsoft Windows Server 2003 Datacenter Edition	9.2		9.2 TS1M0
		Microsoft® Windows® for 64-Bit Itanium-based Systems	9.2		9.2 TS1M0
		z/OS 64-bit	9.2	9.4_M7	9.2 TS1M0	9.4 TS1M7
		z/OS	9.2	9.4_M7	9.2 TS1M0	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.

Both examples below demonstrate that the NVALID function reports correctly the validity of a character string for use as a SAS variable name. Because the VALIDVARNAME value is UPCASE, V is not valid whereas V2 is valid.

---

/* The second argument specifies the setting of the VALIDVARNAME system option to make the determination. */

data a;
   v=nvalid('x','upcase');
   v2=nvalid('X','upcase');
run;
 
proc print;
run;

-----------------------------------------------------------------

/* A second argument is not supplied for NVALID so the VALIDVARNAME system option is used. */

options validvarname=upcase;

data a;
   v=nvalid('x');
   v2=nvalid('X');
run;
 
proc print;
run;

                                          Obs    V    V2

                                           1     0     1

Type:	Problem Note
Priority:	medium
Topic:	SAS Reference ==> Functions ==> Character ==> NVALID

Date Modified:	2021-09-21 10:02:22
Date Created:	2021-09-02 09:48:41