Performance

Optimizing Your Query Plans with the SQL Server 2014 Cardinality Estimator

  • Article

SQL Server 2014 introduces the first major redesign of the SQL Server Query Optimizer cardinality estimation process since version 7.0. The goal for the redesign was to improve accuracy, consistency and supportability of key areas within the cardinality estimation process, ultimately affecting average query execution plan quality and associated workload performance. This paper provides an overview of the primary changes made to the cardinality estimator functionality by the Microsoft query processor team, covering how to enable and disable the new cardinality estimator behavior, and showing how to troubleshoot plan-quality regressions if and when they occur.

2018-06-26

2,974 reads

Blogs

Lambda Architecture in data systems and possible meaning of this name

By

(2021-Sep-21) There is one scene in "The Core" movie that I really like when two geophysicists...

Removing a Deleted Column from a Data Masker Masking Set

By

Data Masker for SQL Server is a great tool ensuring the data you use...

Containers: A Short Rant

By

I find myself doing more and more work with containers. Yet, I also find...

Read the latest Blogs

Forums

Page number in forum topic

By ShaunHardy

Hi all. I’m not even sure if this is the right section to post...

Metadata-Data-Ratio in a table

By sean redmond

Hi all, My understanding about the structure of data within SQL Server is that...

Always On - why No failover occurred?

By onlo

Hi, I am using SQL 2016 (13.0.5888.11). Last Saturday (18th September), in non-office hours,...

Visit the forum

Ask SSC

SQL Server Q&A from the SQLServerCentral community

Get answers