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Transact-SQL Programming and Query Writing Tutorial: Pt. 6 - Using HAVING and GROUP BY

   Chapter: SELECT, INSERT, UPDATE and DELETE - Data Manipulation Language
Download! Skill Level: 100 (Beginner)
Duration: 10:15
Size: 8.02MB
Versions/Editions Covered: SQL Server 2005 , SQL Server 2008 , SQL Server 2000
Added/Updated: Mar 20, 2007

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This is video number 6 of a series of 7 masterfully recorded videos about working with the Data Manipulation Language (DML) SELECT statement. This video uses the Northwind database, focuses on a review of the GROUP BY and HAVING clause. This video adds a wonderful addition to the video series. Scott Whigham presents us with a vast amount of information and easy to following training
about the HAVING, GROUP BY and WHERE clauses including the following:
  • Requirements of HAVING clause
  • Definition of HAVING clause
  • Differences between HAVING and WHERE clauses
  • Explanation of WHERE and HAVING clauses
  • Explanation of the Processing Sequence for a SQL Server single table query
  • Real life examples utilizing the HAVING clause
  • Errors when working with aggregated data and WHERE clauses
  • Introduction and explanation of aggregated data and the HAVING clause
  • When and why to utilize the WHERE clause
  • When and why to use the HAVING clause
  • Common errors when using the HAVING clause
  • Rectifying common errors when working with the HAVING or WHERE clauses
  • Basic introduction to the IN clause
This video is a must see for people interested in learning all of the ins and outs of the GROUP BY, and HAVING clauses. T-SQL progamming king, Scott Whigham does a phenomenal job in bringing us a
very user-friendly, easy to follow video series to learn from. This video was reviewed and this description was written by Wayne Leiser.
Tags for this video: clause DML group by having WHERE  
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This video is part of the following video series: "A Lengthy Overview of the SELECT Statement"
This lengthy 7-part series is all about working with the Data Manipulation Language (DML) SELECT statement.Covered in this video are also some simple main sequences of SQL focusing on the statements, requirements and their various uses.

Highlights:
  • Returns from a SELECT statement
  • Introduction to the SELECT, FROM, JOIN, WHERE, GROUP BY, HAVING, ORDER BY statements
  • Basic definition for result sets
  • Intro to the AND / OR clauses
  • Proper utilization of parenthesis () when writing queries
  • Proper use of DISTINCT vs Improper use of GROUP BY
  • When and why to use the HAVING clause
  • Simplistic and complex TOP clause examples

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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