SAS Programming most important tips to remember while coding.

1. Always check the log after run the job.
2. Write a comment in each step which can help you or someone who needs to update the code.
3. Turn on options mprint, mlogic, symbolgen etc when creating macro which helps to debug the issue easily if there any issue.
4. Try to write a macro if you need to use same code multiple time.
5. Use KEEP or DROP statement if you are reading big table and you don't want to read all columns.
6. Subset the data if you don't want everything using WHERE or IF statement.
7. Always try to execute and check log/result after every step you develop. If you have big job and if it is fail after you run full code then it will be hard to debug. 
8. if you have any issue or questions contact SAS technical support.