How to limit data while uploading data for processing on remote server?

[inquistive]

...
rsubmit;
1. proc upload data=mylib.student_details out=student_details;
2. proc upload data= student.studentID out=studentID;
...
<data analysis steps>
...
endrsubmit;
...

Based on above steps, suppose I have only 200 studentID(under mylib.student_details(step#1) in sample code) whereas student.studentID(step#2 in sample code) table has 1 million studentID. Now I want to fetch/upload only 200 studentID (required for the analysis).Is it possible to do so(limit records as per requirement)? If yes, how? Any help would be greatly appreciated. Thanks.

[AMSAS]

There are a number of ways to control what gets uploaded using dataset options for example

OBS= Data Set Option
WHERE= Data Set Option 

Although I'm not sure that's the question you are asking. I suspect that you only want to upload observations from the large dataset that match observations (student_id) in the smaller dataset.

If that's the case then why not do a match-merge and upload the resulting dataset?