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Matan Yungman

Matan Yungman is a Technical Evangelist and senior consultant at Madeira SQL Server Services. His job is to get the word out about SQL Server. He speaks, lectures, writes, teaches and consults about SQL Server, focusing mainly on performance tuning, database development, high availability and database design. He’s passionate about SQL Server, technology and the SQL Server community.

The Strange Story About the MERGE that Killed the Cluster

I don’t like the MERGE statement. The syntax is weird, it’s tricky in terms of locks, and it has a history of weird errors. The other day a developer wanted my help in troubleshooting a MERGE that caused an ACCESS VIOLATION error and a stack dump generation. That… Read more

10 comments, 3,721 reads

Posted in Matan Yungman on 20 February 2014

Know When it’s Good Enough

Here’s a newsflash: You may not thing so, but you are expensive. There’s no point in endless performance tuning. I love performance tuning a lot, and even more, I love challenges. But sometimes taking a query from the “good enough zone” down to “super-performance zone” will take a lot… Read more

4 comments, 339 reads

Posted in Matan Yungman on 28 January 2014

Things I Learned in 2013

It’s 2014 now. I hope you had fun in new year’s eve. 

2013 was an amazing and intense year. To recap it, I thought about sharing some of the things I learned:

SQL Server

  • I love Parallelism. Once you get used to look for parallelism options in your queries, and…

Read more

2 comments, 342 reads

Posted in Matan Yungman on 2 January 2014

T-SQL Tuesday #49: Using CXPacket Waits to Detect Query Bottlenecks

This post is for T-SQL Tuesday #49, the monthly blog party of the community.

This tradition was started by Adam Machanic (blog | @AdamMachanic), and this month’s host is Robert David (blog | @SQLSoldier). This month’s topic is all about waits..

It’s Friday, Friday

It… Read more

6 comments, 653 reads

Posted in Matan Yungman on 10 December 2013

Interviews with Brent Ozar, Adam Machanic and Denny Cherry for SQL Server Radio

While in SQLRally Amsterdam, I had the honor to interview Brent Ozar (blog | twitter), Adam Machanic (blog | twitter) and Denny Cherry (blog | twitter) to the Israeli SQL Server Radio, the Podcast I co-host with Guy Glantser (blog | twitter Read more

0 comments, 220 reads

Posted in Matan Yungman on 9 December 2013

My SQLRally Experience

The past week I had the pleasure to attend SQLRally Amsterdam.

I took a flight from Tel-Aviv to Amsterdam and got there on Tuesday morning, which left me a whole day to get around the city. I traveled in the city center, ate a delicious pancake, drank a lot of… Read more

1 comments, 294 reads

Posted in Matan Yungman on 11 November 2013

How to Limit IO Requests with SQL Server 2014 Resource Governor

Resource Governor was introduced in SQL Server 2008 in order to allow us have better control over our system resource consumption. With Resource Governor, we can divide our users to groups, when each group gets a certain percent of our resources. That way, we can reduce the risk of a… Read more

1 comments, 677 reads

Posted in Matan Yungman on 9 October 2013

How to Become a Better DBA

Whether you’re just starting out or already a few years in the game, you’re probably wondering how you can become a better DBA.

Here’s what works for me:

1. Learn a Lot…of what you Find Interesting

There are no shortcuts – You have to learn. But it’s a lot easier… Read more

5 comments, 2,747 reads

Posted in Matan Yungman on 26 August 2013

Using Change Data Capture and CLR to Transfer Data to the Cloud

We were three: A DBA, a developer and a tester.

Our mission: To develop an ongoing process that will transfer one of our biggest and busiest tables to the cloud. Here’s the story of how we did it:

The Requirements

  1. Transfer the table insert and updates to Azure in a…

Read more

3 comments, 555 reads

Posted in Matan Yungman on 23 July 2013

Best SQL Server Podcast and Video Sites (Hangout)

My friend Boris Hristov (Blog | Twitter) continues his Google Hangouts initiative, and this week he invited me to talk about the best learning resources for SQL Server.

We talked about the best Podcast and video sites out there. Due to some technical issues we couldn’t talk about… Read more

0 comments, 850 reads

Posted in Matan Yungman on 19 July 2013

New Hebrew SQL Server Podcast

Five months ago, I wrote a post about my love for Podcasts.

At some point, I started to think about starting a Podcast that will be addressed to the Israeli SQL Server community.

I talked about the idea with Guy Glantser (Blog | Twitter), the CEO of… Read more

0 comments, 587 reads

Posted in Matan Yungman on 15 July 2013

This Can Be the Best Thing in SQL Server 2014

New versions have bombastic and catchy features. But a lot of times, the little, hidden features are the ones that matter the most.

I already wrote in the past about the small changes that make a difference in SQL Server 2012, and yesterday about the maturity of SQL Server 2014 Read more

4 comments, 806 reads

Posted in Matan Yungman on 26 June 2013

My Thoughts about SQL Server 2014

SQL Server 2014 is coming. Go ahead and download the public CTP.

I’ve just started getting my hands dirty with the new version. Based on that and on the stuff that has already been published, here’s a few thoughts:

SQL Server 2014 is Mature

Microsoft takes care of… Read more

1 comments, 2,360 reads

Posted in Matan Yungman on 25 June 2013

Nested Loops, Parallelism and Confusion

I’m 30 today.

In addition, it’s been 10 years since I started working with SQL Server.

In my twenties, I fell in love with T-SQL and SQL Server, got to a point I felt I needed a break, and came back fully energized.

One of my favorite parts of being… Read more

5 comments, 567 reads

Posted in Matan Yungman on 11 June 2013

Hangouts Session with Boris Hristov

I was invited to take part in a new initiative conceived by Boris Hristov (Blog|Twitter).

Boris wants to start using the Google Hangouts video calls in the SQL Server community, and we had a nice chat about where and how this platform can fit between the… Read more

1 comments, 350 reads

Posted in Matan Yungman on 29 May 2013

Five Ways to Improve Your Productivity with SSMS

For most DBAs, Management Studio is the primary work tool.

That’s why properly using it can save a-lot of time and effort.

Here’s a few tricks that can improve your productivity when working with it:

1. Snippets and Keyboard Shortcuts

The amount of time these two features saved me is… Read more

10 comments, 5,922 reads

Posted in Matan Yungman on 30 April 2013

Cool Tool – SQL Space Map

I came across a cool open source tool called “SQL Space Map“.

The tool, written by Ryan McCauley, presents a visual representation of table and index sizes:

It can be very handy when you need to quickly understand what are the main tables in a database.

It… Read more

0 comments, 396 reads

Posted in Matan Yungman on 17 April 2013

Weekly Links – 05/04/2013

I’m starting a new tradition:

Before each weekend, I will post links to the best SQL Server stuff i’ve read, heard and watched, as well as to other interesting stuff. Each category will usually have 3-5 links, depending on my pace and focus on that week.

Below are the links… Read more

0 comments, 450 reads

Posted in Matan Yungman on 5 April 2013

The Axis Of Evil

Views, table variables and local variables are great in terms of programming principles.

But In terms of performance, they can be a honey trap: They don’t scream “DANGER!” like cursors or user defined functions, but they can cause serious problems very easily.

That’s why I call them “The… Read more

5 comments, 2,065 reads

Posted in Matan Yungman on 20 March 2013

Do You Know sys.dm_exec_text_query_plan?

One of the most fundamental DMF’s a SQL Server DBA should know is sys.dm_exec_query_plan.

This Dynamic Management Function allows us to see the Execution Plan for queries that are either currently running or have been cached.

For example, the following query will return the plan for queries that are currently… Read more

0 comments, 2,019 reads

Posted in Matan Yungman on 12 March 2013

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