Physical Join Operators in SQL Server - Merge Operator
Part II of the Physical Joins series looks at the Merge operator.
2010-07-05
4,112 reads
Part II of the Physical Joins series looks at the Merge operator.
2010-07-05
4,112 reads
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
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
2009-04-24
3,399 reads
Keeping in mind the importance of the cache mechanism, how could one get the plans and their usage statistics in SQL Server?
2009-01-19
4,183 reads
Learning how to read and analyze execution plans takes time and effort. But once you gain some experience, you will find them an essential skill for getting to grips with performance issues in SQL Server Queries. Grant here describes the range of execution plans for different simple SQL Queries.
2009-01-05
5,326 reads
No Scooby-Doo story is complete without footprints leading to a hidden passage. In SQL...
By James Serra
A bunch of new features for Microsoft Fabric were announced at the Microsoft Fabric Community...
By Steve Jones
I saw an article recently about implicit transactions and coincidentally, I had a friend...
We’re running SQL Server 2019 with database compatibility level 150, and after recent tuning...
Comments posted to this topic are about the item Changing the Recovery Time
Comments posted to this topic are about the item Getting More Time from AI
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