SQL 触发器 - 如何获取更新的值

SQL 触发器 - 如何获取更新的值？

sql
CREATE TRIGGER Employee_Salary_Trigger
AFTER UPDATE ON Employees
FOR EACH ROW
BEGIN
    DECLARE updated_salary DECIMAL(10,2);
    
    IF NEW.salary <> OLD.salary THEN
        SET updated_salary = NEW.salary;
        INSERT INTO Salary_Log(employee_name, old_salary, new_salary)
        VALUES (NEW.name, OLD.salary, updated_salary);
    END IF;
END;