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Transact SQL Tutorial: Pt. 4 - Writing UPDATE Statements That Reference Multiple Tables (FROM Clause)

   Chapter: SELECT, INSERT, UPDATE and DELETE - Data Manipulation Language
Download! Skill Level: 400 (Intermediate - Advanced)
Duration: 12:00
Size: 8.22MB
Versions/Editions Covered: SQL Server 2005 , SQL Server 2008 , SQL Server 2000
Added/Updated: Apr 19, 2007

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This video is part 4 of a 4 part series of videos on the Data Manipulation Language (DML) UPDATE STATEMENT. This video takes the UPDATE STATEMENT to the next level. Just when you thought you could not learn anything else about the UPDATE STATEMENT, Scott Whigham has even more to share with you.The following video includes information and training on the following:
  • T-SQL Proprietary Code
  • FROM Clause and the UPDATE Statement
  • Origin of the FROM Clause
  • Explanations to Why you should and Why you should NOT utilize the FROM clause
  • Real world examples of how and why to utilize the FROM clause
  • Common Errors in real world uses of SELECT and FROM statements and how to rectify those errors
  • Introduction to JOINS and UPDATES
  • PROPER JOIN Syntax
  • Explanations to why you should NOT utilize a JOIN and UPDATE statement where you can use a
  • subquery instead.
  • Examples show on what is ANSI compliant syntax and what is T-SQL proprietary syntax
  • Proper UPDATE Statement and SET Command syntax
  • Real World examples of proper syntax and bad syntax when writing UPDATES and JOINS
Scott does a wonderful job of showing us how to utilize the UPDATE statement with a JOIN syntax.This video however does require an extensive amount of knowledge towards JOIN statements to followthis. This is a very good video for the more advanced SQL Server programmer wanting to increasetheir knowledge about the UPDATE Statement.

NOTE: This video description was written by one of our members, Wayne Leiser. Thanks, Wayne!
Tags for this video: DML FROM clause JOIN JOINS SET COMMAND Simple subquery SQL JOINS Subqueries SUBQUERY T-SQL Transact SQL transact-sql TSQL UPDATE STATEMENT UPDATE syntax  
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This video is part of the following video series: "An Overview of the UPDATE Statement"
This series will demonstrate to you how to utilize proper syntax and rules when working with the UPDATE statement.

Highlights:
  • Introduction and Explanation of the three SQL Language Classifications
  • DEFAULT DML STATEMENT
  • Open and Completed Transaction Statements
  • Introduction to IF and ELSE statements within Transactions.
  • Proper utilization and syntax with the UPDATE STATEMENT and SET COMMAND.
  • Common Errors in real world uses of SELECT and FROM statements and how to rectify those errors
  • Introduction to JOINS and UPDATES
To view all videos in this series, click here

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)

   
 
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8/29/2008 1:47:53 AM