The SQL COALESCE function returns the first non-null value from a list of arguments. Learn what is the purpose of the SQL COALESCE function, how to use it, and some examples of its applications.

If all the arguments are null, COALESCE returns null. COALESCE is a standard SQL function that works across different database systems, such as MySQL, Oracle, SQL Server, and PostgreSQL.

This repository contains SQL queries from various popular online learning resources e.g. Vertabelo Academy, SQLZoo etc. - ybg345/sql-hands-on ...