November 2013
Intermediate to advanced
982 pages
34h 23m
English
book
Microsoft SQL Server 2012 Internals
by Bob Beauchemin Kalen Delaney Conor Cunningham, Jonathan Kehayias, Benjamin Nevarez, and Paul S. Randal
Content preview from Microsoft SQL Server 2012 InternalsBecome 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,
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Chapter 10. Query execution
Craig Freedman and Benjamin Nevarez
The SQL Server query processor consists of two components: the query optimizer and the query execution engine. The query optimizer is responsible for generating good query plans. The query execution engine takes the query plans generated by the query optimizer and, as its name suggests, runs them. Query execution involves many functions, including using the storage engine to retrieve and update data from tables and indexes and implementing operations such as joins and aggregation.
This chapter focuses on understanding query behavior by examining the details of your query execution plans. It explains how the SQL Server query processor works, beginning with the basics of query plans and ...
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