How to create MySQL script using MySQL workbench? - mysql

Question

I followed this tutorial but it seems like the queries he used in the video cannot be used in MySQL.
CREATE PROCEDURE spInsertIntoStudentCourses
#StudentName varchar(50),
#CourseName varchar(50)
AS
BEGIN
DECLARE #StudentId int;
DECLARE #CourseId int;
SELECT #StudentId = id from Students where StudentName = #StudentName;
if(#StudentId is null);
Begin;
INSERT INTO Student VALUES (#StudentName);
SELECT #StudentId = SCOPE_IDENTITY();
END;
SELECT #CourseId = id from Courses where CourseName = #CourseName;
if(#CourseName is null)
BEGIN;
INSERT INTO Courses VALUES (#CourseName);
SELECT #CourseId = SCOPE_IDENTITY();
END;
INSERT INTO StudentCourses VALUES (#StudentID, #CourseID);
END
What should be the right syntax for this?

Answer 1

After a year of studying some basics in creating a stored procedure in MySQL, I created my own MySQL version of the above question in like this.
CREATE PROCEDURE `InsertStudentCourse`(
_studentName VARCHAR(50),
_courseName VARCHAR(50)
)
BEGIN
DECLARE _studentId INT;
DECLARE _courseId INT;
SELECT _studentId = studentId FROM students WHERE studentName = _studentName;
IF (_studentId IS NULL) THEN
BEGIN
INSERT INTO students VALUES (NULL, _studentName);
SELECT _studentId = LAST_INSERT_ID();
END;
END IF;
SELECT _courseId = courseId FROM courses WHERE CourseName = _courseName;
IF (_courseId IS NULL) THEN
BEGIN
INSERT INTO courses VALUES (NULL, _courseName);
SELECT _courseId = LAST_INSERT_ID();
END;
END IF;
INSERT INTO student_courses VALUES (NULL, _studentName, _courseName);
END