July 2012
Intermediate to advanced
478 pages
10h 3m
English
Content preview from Microsoft SQL Server 2012 Performance Tuning CookbookBecome 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 15. Advanced Query Tuning Hints and Plan Guides
In this chapter we will cover:
- Using the
NOLOCKtable query hint - Using the
FORCESEEKandINDEXtable hints - Optimizing a query using an object plan guide
- Implementing a fixed execution plan using a SQL plan guide
Introduction
When you submit a SQL query to the SQL Server, SQL Server first parses the query to check whether it's syntactically correct or not. Once the query is parsed, a parse tree is generated. The parse tree becomes the input of the next process, which is known as algebraization. The algebrizer resolves all the names, data types, and aliases of columns of various objects and creates a query tree, which the query optimizer can understand. Query optimizer optimizes queries, depending ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.