December 2016
Intermediate to advanced
368 pages
6h 44m
English
Content preview from Sams Teach Yourself Microsoft® SQL Server T-SQL in 10 Minutes, Second Edition
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Lesson 19. Updating and Deleting Data
In this lesson, you learn how to use the UPDATE and DELETE statements to enable you to further manipulate your table data.
Updating Data
To update (modify) data in a table, you use the UPDATE statement. UPDATE can be used in two ways:
To update specific rows in a table
To update all rows in a table
Caution: Don’t Omit the WHERE Clause
Special care must be exercised when using UPDATE because it is all too easy to mistakenly update every row in your table. Be sure to read this entire section on UPDATE before ...
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