Video:
JOINs - An Overview of the Five Types of JOINs (Cross, Outer, and Inner)
Skill
level:
200 (Beginner - Intermediate)- Run Time:
23:30
- Instructor:
Scott Whigham
Description:
Understanding the types of JOINs and the differences between each is vitally important to anyone who writes queries/reports for a living. This video does an excellent job of explaining what many people find to be very intimidating: joining tables. This video is really meant to be watched as part of the other videos in this category since it is more theoretical rather than talking syntax. After watching this video, you should be able to think "visually" with your JOINs, understand when to use the INNER or the OUTER join and the purpose of the CROSS join.
Highlights from this video:
- INNER join logic
- Discussions of matching vs. non-matching rows
- When to use an INNER or an OUTER join
- Using the CROSS JOIN and the architecture behind Cartesian products/cross product queries
- Should you use the CROSS JOIN often?
- Which join type is most popular? What does that depend on?
- LEFT OUTER JOIN, RIGHT OUTER JOIN, and the FULL OUTER JOIN
and much more
Note: This video include a sample SQL script
Download
and watch this video
NOTE: You will need the TSCC codec
installed to view video
Scott Whigham
Scott Whigham is the founder of LearnItFirst.com, one of the web's most extensive
video training libraries focusing on technical training. Scott is also an experienced
consultant, trainer, and author with more than a decade of hands-on experience working
with SQL Server databases, writing and debugging applications using Visual Studio,
and performance tuning. Scott designed the architecture (websites, class libraries,
and database) for the LearnItFirst.com websites and, most
re...
(Scott's full bio can be found here)
NOTE: This video is part of our
SQL Server Programming (SQL Server 2005/2000): Transact SQL course.
This video is from Chapter
6:
JOINs and UNIONs - Working with Multiple Tables
