What is the purpose of “begin end” in MySQL?

In MySQL, BEGIN and END are used to define the beginning and end of a code block. This code block can contain a series of SQL statements or stored procedure definitions. Placing a series of SQL statements between BEGIN and END will cause them to be executed as a whole, allowing for a group of related operations to be carried out. It can also be used in conjunction with transaction management features to ensure that these statements either all successfully execute or all fail and rollback. When defining a stored procedure between BEGIN and END, this code block serves as the main part of the stored procedure, defining its functionality and logic.