Sample 25082: Determine if a particular variable is present within a data set
The sample code on the Full Code tab uses functions like OPEN and VARNUM to determine if a variable exists in a data set.
These sample files and code examples are provided by SAS Institute
Inc. "as is" without warranty of any kind, either express or implied, including
but not limited to the implied warranties of merchantability and fitness for a
particular purpose. Recipients acknowledge and agree that SAS Institute shall
not be liable for any damages whatsoever arising out of their use of this material.
In addition, SAS Institute will provide no support for the materials contained herein.
/* Sample data */
data one;
input a b;
datalines;
1 2
;
run;
%macro varcheck(varname,dsname);
%let dsid = %sysfunc(open(&dsname));
%let val = %sysfunc(varnum(&dsid,&varname));
%let rc = %sysfunc(close(&dsid));
&val
%mend varcheck;
/* First parameter is the variable name you want to check. */
/* Second parameter is the name of the dataset to search. */
%put %varcheck(c,one);
These sample files and code examples are provided by SAS Institute
Inc. "as is" without warranty of any kind, either express or implied, including
but not limited to the implied warranties of merchantability and fitness for a
particular purpose. Recipients acknowledge and agree that SAS Institute shall
not be liable for any damages whatsoever arising out of their use of this material.
In addition, SAS Institute will provide no support for the materials contained herein.
This code sample contains a macro that will return a 1 if the data set variable exists, or a 0 if the variable does not exist in the data set.
| Type: | Sample |
| Topic: | SAS Reference ==> Macro
|
| Date Modified: | 2023-04-20 10:27:03 |
| Date Created: | 2005-01-26 16:17:36 |
Operating System and Release Information
| SAS System | Base SAS | z/OS | 9 TS M0 | |
| Microsoft® Windows® for 64-Bit Itanium-based Systems | 9 TS M0 | |
| Microsoft Windows Server 2003 Datacenter 64-bit Edition | 9 TS M0 | |
| Microsoft Windows Server 2003 Enterprise 64-bit Edition | 9 TS M0 | |
| Microsoft Windows 2000 Advanced Server | 9 TS M0 | |
| Microsoft Windows 2000 Datacenter Server | 9 TS M0 | |
| Microsoft Windows 2000 Server | 9 TS M0 | |
| Microsoft Windows 2000 Professional | 9 TS M0 | |
| Microsoft Windows NT Workstation | 9 TS M0 | |
| Microsoft Windows Server 2003 Datacenter Edition | 9 TS M0 | |
| Microsoft Windows Server 2003 Enterprise Edition | 9 TS M0 | |
| Microsoft Windows Server 2003 Standard Edition | 9 TS M0 | |
| Microsoft Windows XP Professional | 9 TS M0 | |
| 64-bit Enabled AIX | 9 TS M0 | |
| 64-bit Enabled HP-UX | 9 TS M0 | |
| 64-bit Enabled Solaris | 9 TS M0 | |
| HP-UX IPF | 9 TS M0 | |
| Linux | 9 TS M0 | |
| OpenVMS Alpha | 9 TS M0 | |
| Tru64 UNIX | 9 TS M0 | |
