@Peter_C Your code works. Thank you very much. You are a life saver. @mkeintz Thank you. Your code gives me a STD of all firms' COGSQ in a given datadate (quarter). But I need a progressive STD of COGSQ of each firms when time passes. But your code will surely be a useful reference for me in the furture. @All
Ready to join fellow brilliant minds for the SAS Hackathon?
Build your skills. Make connections. Enjoy creative freedom. Maybe change the world. Registration is now open through August 30th. Visit the SAS Hackathon homepage.