update variables in sql code example

Example 1: updating values in sql

//to update value

UPDATE students SET course_id = 102
WHERE last_name = 'Jones'; -> 
                 if there is no condition it will update all!

Example 2: how to update data in sql

UPDATING ROW
Update TableName set ColumnName = value where condition;
update scrumteam set firstname =‘Martin' where EmployeeID='1';
update scrumteam set lastname =‘Murtin' where firstname='Tom’;