UPDATE information in a database - SQL Tutorial

Updating information in a database is simple also. Last time you can see that we left off Jack's age. We found out it was his 23rd birthday last month, so now we can add this to the database. We'll do that simply by using an UPDATE statement to update his information.

UPDATE Persons SET Age=23 WHERE Name='Jack Smith'

If you're scared of there being two Jack Smiths, you might also add , Level='Level 8 to that statement. If you have two Level 8 Jack Smiths, then you really aught to learn a little about creating ids, so that you can only update the correct Jack.