In my daily use of SQL queries, aggregate functions are used to perform calculations on a set of values, returning a single value. Common examples include SUM, AVG, COUNT, MIN, and MAX.

In SQL, you may be able to use any of the following aggregate functions: COUNT() SUM() AVG() MIN() MAX() However, when using any of the above aggregate functions, remember the following extra ...

Aggregate functions in SQL are used to perform calculations on a set of values and return a single result. These functions operate on a group of rows and produce a single value as output. Some common ...

Imagine writing an application for a restaurant owner to track her customers and transactions, or an app that an e-commerce company uses to store users, transactions and shopping behaviors. Think ...

Hi!I often run queries on my company’s Data Warehouse, which runs DB2. Due to the nature of my permissions, I cannot create Views or new Tables – thus, everything generally has to be done in a ...

Aggregate window functions are used to perform operations on sets of rows in a window(s). They include SUM() , MAX() , COUNT() , and others. Rank window functions are used to rank rows in a window(s).

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.