Accounts finance and marketing people are often concerned with the term “Quarter” in context of their budgeting and marketing assignments.
Sales people often need to estimate the sales of upcoming months. They do it with a handful of techniques that uses both quantitative analysis as well as qualitative judgment.
It is not uncommon that we want to sum data on the basis of certain criteria – on the basis of weeks, months, every tenth day and so on.
Consider a case where you have a table like below and want to fetch the data for a single month.