Hour 13. Joining Tables in Queries


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	Sams Teach Yourself SQL in 24 Hours, Third Edition By Ronald R. Plew, Ryan K. Stephens
	Table of Contents

	Part IV. Building Sophisticated Database Queries

To this point, all database queries you have executed have extracted data from a single table. During this hour, you learn how to join tables in a query so that data can be retrieved from multiple tables.

The highlights of this hour include

An introduction to the table join
The different types of joins
How and when joins are used
Numerous practical examples of table joins
The effects of improperly joined tables
Renaming tables in a query using an alias


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