updating values 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: sql update

Updates existing data in a table.
Example: Updates the mileage and serviceDue values for a vehicle with an
id of 45 in the cars table.
UPDATE cars
SET mileage = 23500, serviceDue = 0
WHERE id = 45;