SQL Server 2005 Video Tutorial: JOINs and UNIONs - How Do I Know When to Use a JOIN or a UNION?
JOINs and UNIONs - How Do I Know When to Use a JOIN or a UNION? - view details
So many newbies to Transact-SQL have difficulties determing when to use a UNION or a JOIN to satisy their query. This video teaches you some guidelines to help you quickly and easily identify whether your query will likely need to become a JOIN or UNION. Disclaimer: these are just guidelines and they will not work in every situation but they are applicable for most SQL developers most of the time.
- Source: http://www.learnsqlserver2005.com
- Category: T-SQL Basics: Queries, Datatypes, Collations and Unicode, and mor e
- Skill Level: 300 (Intermediate)
- Length: 7:12 (5.54MB)
- Applies to Versions: SQL Server - All Versions
- Full Details
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Keywords Associated with this video: join union, sql ansi join, sql union all