Tag: query tuning

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A Better Way to Read Execution Plans Part 1

Added by 3 years ago

4.31K Views0 Comments

Kevin goes over how to do basic query tuning. Then he dives into 3 real world query tuning examples that are taken from Answers.SQLPerformance.com. The examples are SSMS vs. Plan Explorer, Massive MERGE, and the Case of the Log Shipping Mystery.

Ad-Hoc Sets

Added by 4 years ago

2.72K Views0 Comments

Aaron Bertrand goes over how to generate Ad-Hoc Sets efficiently. He shows examples of how to generate them using recursive CTEs, system tables and number tables and shows which way has the best performance.

Become a Query Tuning Master with the Newest Release of SQL Sentry Plan Explorer

Added by 1 year ago

29.90K Views0 Comments

In this video, renowned query tuning expert and Microsoft Data Platform MVP Aaron Bertrand looks at the brand new release of SQL Sentry Plan Explorer, the industry's most popular free query tuning tool.

Comma Delimited Parameters

Added by 4 years ago

3.31K Views0 Comments

Aaron Bertrand discusses one of his favorite topics, comma-delimited parameters. He shows the different ways you can split strings and which ways are the best.

Execution Plan Self-Destruct

Added by 3 years ago

2.00K Views0 Comments

Kevin Kline discusses how SQL Server wants to reuse execution plans but there are issues that can cause execution plans to never be reused. He also shares some examples of how to fix these issues which will help improve SQL Server performance.

Getting Started With Execution Plans

Added by 2 years ago

7.79K Views0 Comments

In this video, Scott Fallen shares tips on how to get started with execution plans. He discusses what an execution plan is and why they are important. He also walks through a couple of sample plans.

Implicit Conversions

Added by 4 years ago

2.80K Views0 Comments

Kevin Kline goes over implicit conversions in SQL Server. He discusses what an implicit conversion is, traps that people fall into with implicit conversions and gives a demo on avoiding implicit conversions. ...

Plan Explorer Demo by Jonathan Kehayias (SQLskills)

Added by 5 years ago

2.98K Views0 Comments

Plan Explorer takes plan analysis to an entirely new level by making it easy to snap to the most expensive operator inside of an execution plan, change the default display to show cumulative costs instead of per...

Plan Explorer Demo by Paul Randal (SQLskills)

Added by 5 years ago

3.03K Views0 Comments

Paul Randal of SQLskills shows how to analyze what's using space in tempdb, and provides an overview of how to use SQL Sentry Plan Explorer in the investigation. Immerse yourself in SQL Server with the SQLskills...

Queries with IN(…) / OR

Added by 3 years ago

3.66K Views0 Comments

In this Quick Tip, Aaron Bertrand and Kevin Kline discuss queries that use IN(…) vs. queries that use OR. They use a demo to show how the two types of queries are interchangeable and how they both optimize to the exact same plan.

Query Progress Tracking in SQL Server

Added by 1 year ago

2.83K Views0 Comments

It's 18:00 o'clock on Friday. You execute a process that usually takes a few minutes and start packing in order to start the weekend. You are already with your bag on your back, but the process doesn't finish. You sta...

Specifying the Schema

Added by 3 years ago

2.68K Views1 Comments

Aaron Bertrand and Kevin Kline discuss some of the advantages for specifying the schema when creating, altering and referencing objects. They discuss how specifying a schema can affect performance and how important it is for security. They also use demos to illustrate the importance.

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