This repository contains a collection of SQL queries demonstrating the use of aggregate functions and SQL clauses as part of a database assignment.

SQL is a tool that is widely used in the manipulation of data and featuring in the relational database. They are applied in querying, manipulating as well as reporting data and it is commonly used by ...

The aggregate function may be tricky, but we will resolve it in this guide. However, you may check out our other guide if your SQL Server query execution failed for a dataset.

SQL window functions provide extremely powerful and useful features that let you work with observations more easily. Different types explained here.

SQLite has nice feature which allows to register custom aggregate functions written in C (and Lua in case of Tarantool) and available from SQL like any other. Example is count_x() which counts numb ...

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 ...