Step-by-step explanation:
The main difference between SQL and MySQL is how MySQL is a software that stores RDB , while SQL is a database programming language that stores data in RDB. RDB is a relational database.
Different subsets of SQL are DML, DDL, DCL, and a bit more.
Businesses can actually benefit from SQL by collecting the data the business makes and helps people in the business find the specific datas they need to succeed and build their "empire". In my opinion, SQL is easier to learn versus mySQL.