Summary

In this lesson, you learned how to use the UPDATE and DELETE statements to manipulate the data in your tables. You learned the syntax for each of these statements, as well as the inherent dangers they expose. You also learned why WHERE clauses are so important in UPDATE and DELETE statements, and you were given guidelines that should be followed to help ensure that data does not get damaged inadvertently.

Get Sams Teach Yourself SQL in 10 Minutes now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.