April 2007
Intermediate to advanced
1032 pages
19h 28m
English
book
SQL for MySQL Developers: A Comprehensive Tutorial and Reference
by Rick F. van der Lans, Diane Cools
Content preview from SQL for MySQL Developers: A Comprehensive Tutorial and Reference
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Chapter 17. Updating Tables
17.1 Introduction
MySQL offers various statements for updating the contents (the column values in the rows) of tables. Statements exist for inserting new rows, changing column values, and deleting rows. This chapter describes the extensive features of these statements.
Note
In most examples of this book, we assume that the tables contain their original contents. If you execute the statements discussed in this chapter, you will change the contents of the tables. Consequently, the results of your statements in the next examples can differ from those in the book. On the web site of the book, www.r20.nl, you can read ...
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