Execution Plans

External Article

Operator of the Week - Lazy Spool

  • Article

Continuing to illuminate the depths of SQL Server's Query Optimizer, Fabiano shines a light on the sixth major Showplan Operator on his list: the Lazy Spool. What does the Lazy Spool do that's so special, how does the Query Optimizer use it, and why is it so Lazy? Fabiano Amorim explains all.

2010-06-28

2,774 reads

External Article

Controlling Execution Plans with Hints

  • Article

The Query Optimizer gets it right most of the time, but occasionally it chooses a plan that isn't the best possible. You can give the Query Optimiser a better idea by using Table, Join and Query hints. These come with a risk: Any choices you force on the Optimizer by using hints can turn out to be entirely wrong as the database changes with the addition of data over time. Grant Fritchey, in a chapter from his highly acclaimed book, explains further.

2009-11-25

3,275 reads

Blogs

The Mystery of the Locked-Up Database -Scooby Dooing Episode 6

By

No Scooby-Doo story is complete without footprints leading to a hidden passage. In SQL...

Announcements from the Microsoft Fabric Community Conference

By

A bunch of new features for Microsoft Fabric were announced at the Microsoft Fabric Community...

The Challenge of Implicit Transactions: #SQLNewBlogger

By

I saw an article recently about implicit transactions and coincidentally, I had a friend...

Read the latest Blogs

Forums

Compatibility levels on database changing them and impacts.

By jonluder

We’re running SQL Server 2019 with database compatibility level 150, and after recent tuning...

Changing the Recovery Time

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Changing the Recovery Time

Getting More Time from AI

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Getting More Time from AI

Visit the forum

Question of the Day

Changing the Recovery Time

I want to change the recovery time for a database running on SQL Server 2022. What are my options for setting the value in my ALTER DATABASE statement. If I run this code, what can I use in place of the xxx to define what 12 means?

ALTER DATABASE Finance 
 SET TARGET_RECOVERY_TIME = 12 xxx;

See possible answers