Hour 13. Joining Tables in 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
Get Sams Teach Yourself SQL in 24 Hours, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
