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The Scary DBA

I have twenty+ years experience in IT. That time was spent in technical support, development and database administration. I work forRed Gate Software as a Product Evangelist. I write articles for publication at SQL Server Central, Simple-Talk, PASS Book Reviews and SQL Server Standard. I have published two books, ”Understanding SQL Server Execution Plans” and “SQL Server 2008 Query Performance Tuning Distilled.” I’m one of the founding officers of the Southern New England SQL Server Users Group and its current president. I also work on part-time, short-term, off-site consulting contracts. In 2009 and 2010 I was awarded as a Microsoft SQL Server MVP. In the past I’ve been called rough, intimidating and scary. To which I usually reply, “Good.” You can contact me through grant -at- scarydba dot kom (unobfuscate as necessary).

Archives: November 2016

Database Clone

There are a bunch of ways you could create a database clone. Backup and restore is one method. Export/Import is another. There are even third party tools that will help with that. However, each of these has a problem. It’s moving all the data, not just once, but twice. You… Read more

1 comments, 1,668 reads

Posted in The Scary DBA on 28 November 2016

PowerShell to Test a Query

So you want to do some tuning, but you’re not sure how to test a query on it’s performance. Not a problem. Here’s a very rough script that I use to do some recent testing.

This script to test a query is post #11 of the #enterylevel #iwanttohelp effort started… Read more

4 comments, 434 reads

Posted in The Scary DBA on 23 November 2016

SQL Server on Linux: Boring

As a concept, SQL Server on Linux is thrilling. Due to this, the OS doesn’t stand in the way of taking advantage of everything that SQL Server offers. Because we have Linux, we have opportunity for all sorts of new fun.

I first saw SQL Server running on Linux about… Read more

10 comments, 396 reads

Posted in The Scary DBA on 22 November 2016

Query Data Store Data

The data in the Query Data Store is what makes all the magic happen. From collecting the aggregate performance metrics of a query to the various plans in use by that query to being able to force a plan, it’s all controlled by the data within the Query Data Store… Read more

5 comments, 1,042 reads

Posted in The Scary DBA on 21 November 2016

Book Review: Marshmallow Test

Different people approach their career in different ways. My working assumption, all the time, is that I don’t know enough and I’m not good enough. Don’t get me wrong, I’ve got an ego (way too big of one really). I just know that there’s room for improvement. It’s one of… Read more

2 comments, 243 reads

Posted in The Scary DBA on 18 November 2016

Azure Data Platform Learning Resources

I know that more and more of you are moving more and more resources into the Azure Data Platform. In an effort to help you learn about all that Azure offers I created a GitHub repository of blogs, teachers, courses, etc. It’s open to the community to update. New material… Read more

1 comments, 429 reads

Posted in The Scary DBA on 9 November 2016

PASS Board Update: Post-Summit 2016

Monday

I got in on Sunday and chose to have a small dinner with a couple of friends, quiet, preparing.

Monday was a less hectic day than the others . The Board had the morning off, although Redgate had me go and give a session at an event. Monday afternoon… Read more

2 comments, 257 reads

Posted in The Scary DBA on 8 November 2016

sp_executesql Is Not Faster Than an Ad Hoc Query

This requires an immediate caveat. You should absolutely be using sp_executesql over any type of non-parameterized execution of T-SQL. You must parameterize your T-SQL because the lack of parameters in building up and executing strings is a classic SQL Injection attack vector. Using straight ad hoc T-SQL is an extremely… Read more

0 comments, 804 reads

Posted in The Scary DBA on 7 November 2016

Reinforcing the Importance of Statistics on Row Estimate

I recently wrote an introductory post about the importance of statistics. I just received a reinforcement on how important they are during my own work.

Bad Estimate

I hit a weird problem while I was setting up a query to illustrate a point (blog to be published next week).… Read more

1 comments, 1,017 reads

Posted in The Scary DBA on 3 November 2016

Stored Procedures Are Not Faster Than Views

A performance tuning tip I saw recently said, “Views don’t perform as well as stored procedures.”

<sigh>

Let’s break this down, just a little.

Definitions

A view is nothing but a query. The definition given by Microsoft is that it’s a virtual table that’s defined by a query. It’s a… Read more

3 comments, 3,308 reads

Posted in The Scary DBA on 1 November 2016