Learn what aggregate functions are, how to use them in SQL queries, and why they are useful for BI. Find examples of common scenarios and calculations.

If you have an aggregation function (sum, avg, count) in your select clause or if you have a group by clause, all of your columns must be aggregated or grouped.<BR><BR>In the version of SQL that I ...

Grouping and Summarizing Data with SQL. Contribute to Mesh-code1/MySQL_Aggregate_Functions development by creating an account on GitHub.

We develop a Bayesian analysis for three risk variables (number of claims, severity and aggregate loss), and apply it to sixteen real portfolios of policyholders, to illustrate the validity of the ...