Member of the LearnItFirst.com Video Training Network Related Video Training Sites: · SQL Server DBA Tutorials · Integration Services Training
   
Transact-SQL Programming and Query Writing Training Videos
Transact SQL Video Tutorial Home  Subscriber Videos  

Transact-SQL Programming and Query Writing Tutorial: Subqueries, Nested Queries, and Derived Tables - An Introduction to Advanced SQL Constructs

   Chapter: Subqueries, Nested Queries, and Derived Tables in Transact SQL
Download! Skill Level: 300 (Intermediate)
Duration: 17:27
Size: 12.7MB
Versions/Editions Covered: SQL Server 2005 , SQL Server 2008 , SQL Server 2000
Added/Updated: Apr 18, 2006
Staff Pick!
Download this video
Subqueries and derived tables can be some of the hardest constructs for people new to SQL to really grasp. This video is a "First Look" at sub-selects (another word for sub-queries) and the basic concepts of using subqueries in your SELECT statements. Perhaps the most valuable thing that even seasoned query-writers will get from watching this video is the "how"; a major focus of this video is how SQL Server processes subqueries internally. Scott Whigham, author of this site, takes you through how SQL Server will process the subquery in a step-by-step approach.

Note: This video was shot on SQL Server 2005 but the concepts are the same for SQL Server 2000.

Highlights from this video:

  • Execution plans: are they different or the same between different subqueries?
  • Using a subquery instead of a JOIN and vice-versa
  • Correlated subqueries and Simple Subqueries
  • Derived Tables; i.e., embedding a SELECT statement in the FROM clause
  • Step by step approach to writing subqueries
  • SQL Server architecture: Query Processing Sequence
Tags for this video: dervied table materialize nested query sub select synchronized query virtual table  
< Back Download this video
AddThis Social Bookmark Button
People Who Downloaded this Video Also Downloaded:
TitleSkillDownload
Constraint Keys, Index Keys, Composite Keys, Natural keys, and Surrogate Keys 200 Download
When to Use HAVING Instead of WHERE - Aggregates, GROUP BY, and the HAVING Claus... 300 Download
Query Analyzer - Beyond the Basics (SQL Server 2000) 200 Download
JOINs - An Overview of the Five Types of JOINs (Cross, Outer, and Inner) 200 Download
JOINs and UNIONs - How Do I Know When to Use a JOIN or a UNION? 300 Download

About the Instructor:
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 Whigham's full bio can be found on the About the Author page)

   
 
About Us Video Playback Subscriptions More Video Training More
 
© Copyright 2004-2008 LearnItFirst.com LLC. All rights reserved. All trademarks remain the property of their respective owners. This site is not affiliated in any way with the Microsoft Corporation. Refer a Friend and Get a Free Subscription!
 
1/6/2009 9:14:44 PM