I want to design a query to compute some returns for stock data and in searching the 'SQL Server Books Online' I find a very small and not so helpful at all help section on the lead and lag functions.

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Vivek Yadav, an engineering manager from ...

Microsoft’s Azure cloud service has had a rocky journey to where it is today. Its initial focus on delivering PaaS was clearly too early for the rest of the industry, and it was only a pivot to ...