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Oct19

SQL SERVER – ColumnStore Frequently Asked Queries

Pinal Dave
SQL, SQL Server, SQL Tips and Tricks
SQL Index
2 Comments
This blog talks about troubleshooting scenarios in FAQ format when dealing with ColumnStore Indexes inside SQL Server. Use a combination of trace flags, query hints, performance counters, extended events discussed in various blogs to gather relevant data and troubleshoot the problem. Sometimes I have seen people use ColumnStore as a…
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Oct18

Interview Question of the Week #041 – What is a Merge Join?

Pinal Dave
SQL, SQL Interview Questions and Answers, SQL Server, SQL Tips and Tricks
SQL Joins
2 Comments
Question: What is a Merge Join? Answer: The Merge Join transformation provides an output that is generated by joining two sorted data sets using a FULL, LEFT, or INNER join. The Merge Join transformation requires that both inputs be sorted and that the joined columns have matching meta-data. The user cannot…
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Oct17

SQL SERVER – Script Upgrade Mode on Failover – Why?

Pinal Dave
SQL, SQL Server, SQL Tips and Tricks
2 Comments
Troubleshooting Cluster related queries is always a challenge and every once in a while I get mails around these. One of my friend wrote email to me and it caught my attention and I took couple of days to explore and felt worth to share it here: <EMAIL> Hi Pinal.…
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Oct16

The Milestone – Notes from the Field #100

Pinal Dave
SQLAuthority News
Notes from the Field, SQL Milestone, SQL Server
2 Comments

[Note from Pinal]: This is a 100th episode of Notes from the Field series.

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Oct15

SQL SERVER – Looking Forward to Meeting you at SQLPASS 2015

Pinal Dave
SQL, SQL Server, SQL Tips and Tricks
SQL PASS
3 Comments
If you are going to at SQLPASS 2015, Seattle, I am looking forward to meet you. I will be there and presenting two technology sessions. Here are the details of my sessions. I will be very happy if you are at SQLPASS and attend my session. If you see me…
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Oct14

SQL SERVER – Strange SQL Transaction called UpdateLoginStats

Pinal Dave
SQL, SQL Server, SQL Tips and Tricks
2 Comments
I was preparing a demo for my upcoming presentation which is about couple of weeks ahead. While doing a stress test, I was looking at profiler and found that for every login there is an additional SQL transaction which is having ObjectName as UpdateLoginStats appearing even before Audit Login. Initially…
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Oct13

SQL SERVER – To Find Events Mapped to Channels in Extended Events

Pinal Dave
SQL Tips and Tricks
SQL Extended Events, SQL Scripts, SQL Server
2 Comments

I have outlined a number of blogs here that point to the basics of working with Extended Events. Some of them also detail you some specific scenarios that you can use inside your environments.

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SQLAuthority News – Download Whitepaper – SSIS Operational and Tuning Guide – SSIS for Azure and Hybrid Data Movement – Leveraging a Hadoop cluster from SSIS

SQLAuthority News – Attending SQLskills Training in February 2013

SQL SERVER - Weekly Series - Memory Lane - #012 showplan4-619x563

SQL SERVER – Introduction of Showplan Warning

SQL SERVER – Send Email From SQL Server – Configure Database Mail – SQL in Sixty Seconds #039 – Video

SQL SERVER - Weekly Series - Memory Lane - #012 redundant31

SQL SERVER – An Interesting Case of Redundant Indexes – Index on Col1, Col2 and Index on Col1, Col2, Col3 – Part 4

SQL SERVER - Weekly Series - Memory Lane - #012 serverproperty-1

SQL SERVER – A List of Various SQL Server RTM and Service Pack Number

SQL SERVER – Weekly Series – Memory Lane – #012

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Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 22 years of hands-on experience. He holds a Masters of Science degree and numerous database certifications.

Pinal has authored 14 SQL Server database books and 104 Pluralsight courses. To freely share his knowledge and help others build their expertise, Pinal has also written more than 5,800 database tech articles on his blog at https://blog.sqlauthority.com.

Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service. If you need help with any SQL Server Performance Tuning Issues, please feel free to reach out at pinal@sqlauthority.com.

Pinal is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2).


Nupur Dave is a social media enthusiast and an independent consultant. She primarily focuses on the database domain, helping clients build short and long-term multi-channel campaigns to drive leads for their sales pipeline.


Comprehensive Database Performance Health Check

Is your SQL Server running slow and you want to speed it up without sharing server credentials? In my Comprehensive Database Performance Health Check, we can work together remotely and resolve your biggest performance troublemakers in less than 4 hours.

Once you learn my business secrets, you will fix the majority of problems in the future.


SQL Server Performance Tuning Practical Workshop

Have you ever opened any PowerPoint deck when you face SQL Server Performance Tuning emergencies? SQL Server Performance Tuning Practical Workshop is my MOST popular training with no PowerPoint presentations and 100% practical demonstrations.

Essentially I share my business secrets to optimize SQL Server performance.


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