SQL Update

Update Rows

The UPDATE statement updates or changes rows:

UPDATE table_name SET column_name = new_value WHERE column_name = some_value

Person:

LastName	FirstName	Address	City
Nilsen	Fred	Kirkegt 56	Stavanger
Rasmussen		Storgt 67

Update one Column in a Row

We want to add a first name to the person with a last name of "Rasmussen":

UPDATE Person SET FirstName = 'Nina' WHERE LastName = 'Rasmussen'

Update several Columns in a Row

We want to change the address and add the name of the city:

UPDATE Person SET Address = 'Stien 12', City = 'Stavanger' WHERE LastName = 'Rasmussen'

Result

LastName	FirstName	Address	City
Nilsen	Fred	Kirkegt 56	Stavanger
Rasmussen	Nina	Stien 12	Stavanger