SUPPORT / SAMPLES & SAS NOTES
Problem Note 59800: Non-retained variables are not reset to missing when you use a subsetting IF statement in PROC DS2
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When you use a subsetting IF statement in PROC DS2, non-retained variables might not be reset to a missing value. Non-retained variables should be reset to missing at the beginning of each iteration.
The example code below generates incorrect results by not resetting the values to missing within the program data vector (PDV):
data demo1;
input id age gender $ extra;
datalines;
1 60 F 123
2 40 F 45
3 20 M 987
4 45 M 364
5 35 F 729
;
run;
proc ds2;
data work.demo2(overwrite=yes);
dcl double total;
method run();
put total=;
set demo1;
total=extra*2;
if total gt 500;
end;
enddata;
run;
quit;
input id age gender $ extra;
datalines;
1 60 F 123
2 40 F 45
3 20 M 987
4 45 M 364
5 35 F 729
;
run;
proc ds2;
data work.demo2(overwrite=yes);
dcl double total;
method run();
put total=;
set demo1;
total=extra*2;
if total gt 500;
end;
enddata;
run;
quit;
The SAS® log output below displays the incorrect results:
total=.
total=246
total=90
total=.
total=.
total=.
total=246
total=90
total=.
total=.
total=.
The correct results should be the following:
total=.
total=.
total=.
total=.
total=.
total=.
total=.
total=.
total=.
total=.
total=.
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 | SAS Release | |
| Reported | Fixed* | |||
| SAS System | Base SAS | z/OS | 9.4 TS1M3 | 9.4 TS1M5 |
| z/OS 64-bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft® Windows® for x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8 Enterprise 32-bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8 Enterprise x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8 Pro 32-bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8 Pro x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8.1 Enterprise 32-bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8.1 Enterprise x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8.1 Pro 32-bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 8.1 Pro x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows 10 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows Server 2008 | 9.4 TS1M3 | |||
| Microsoft Windows Server 2008 R2 | 9.4 TS1M3 | |||
| Microsoft Windows Server 2008 for x64 | 9.4 TS1M3 | |||
| Microsoft Windows Server 2012 Datacenter | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows Server 2012 R2 Datacenter | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows Server 2012 R2 Std | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Microsoft Windows Server 2012 Std | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Enterprise 32 bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Enterprise x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Home Premium 32 bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Home Premium x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Professional 32 bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Professional x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Ultimate 32 bit | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Windows 7 Ultimate x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| 64-bit Enabled AIX | 9.4 TS1M3 | 9.4 TS1M5 | ||
| 64-bit Enabled Solaris | 9.4 TS1M3 | 9.4 TS1M5 | ||
| HP-UX IPF | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Linux for x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||
| Solaris for x64 | 9.4 TS1M3 | 9.4 TS1M5 | ||