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.

Part I of this series introduced the lead/lag control strategy as it applies to parallel pump operation and discussed the need for identifying the designer’s intent for a particular system. Part II ...

I would like to thank Rebecca Ellis, P.E., for her 25 years’ worth of contributions to this publication. She has made, and continues to make, significant impacts on this industry, and I am grateful to ...