Skip to Main Content
Microsoft® SQL Server 2008 R2 Unleashed
book

Microsoft® SQL Server 2008 R2 Unleashed

by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
September 2010
Intermediate to advanced content levelIntermediate to advanced
1704 pages
111h 8m
English
Sams
Content preview from Microsoft® SQL Server 2008 R2 Unleashed

Join Processing Strategies

If you are familiar with SQL, you are probably very familiar with using joins between tables in creating SQL queries. A join occurs any time the SQL Server Query Optimizer has to compare two inputs to determine an output. The join can occur between one table and another table, between an index and a table, or between an index and another index (as described previously, in the section “Index Intersection”).

The SQL Server Query Optimizer uses three primary types of join strategies when it must compare two inputs: nested loops joins, merge joins, and hash joins. The Query Optimizer must consider each one of these algorithms to determine the most appropriate and efficient algorithm for a given situation.

Each of the three ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Microsoft® SQL Server 2005 Unleashed

Microsoft® SQL Server 2005 Unleashed

Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein, Tudor Trufinescu, John Kane
Microsoft® SQL Server™ 2005 Administrator's Companion

Microsoft® SQL Server™ 2005 Administrator's Companion

Edward Whalen, Marcilina Garcia, Burzin Patel, Stacia Misner, Victor Isakov
Microsoft® SQL Server® 2008 Internals

Microsoft® SQL Server® 2008 Internals

Paul Randal Kalen Delaney Kimberly Tripp, and Conor Cunningham

Publisher Resources

ISBN: 9780768696585Purchase book