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Jun30

SQL Server – Single Scan for 3 Operations – COUNT(*) COUNT(1) SUM(1)

Pinal Dave
SQL Performance
Execution Plan, SQL Function, SQL Index, SQL Scripts, SQL Server, SQL Server Management Studio, SSMS
No Comments

Today we will take the same conversation to the next level by discussing Single Scan for 3 Operations – COUNT(*) COUNT(1) SUM(1).

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Jun29

SUM(1) vs COUNT(1) Performance Battle – SQL in Sixty Seconds #177

Pinal Dave
SQL Video
Execution Plan, SQL Function, SQL in Sixty Seconds, SQL Scripts, SQL Server
No Comments

Based on my recent two videos, I got lots of questions about SUM(1) vs COUNT(1) Performance Battle. Let us see that in today’s video.

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Jun28

Free Webinar – SQL Performance Monitoring with Wait Statistics Scripts

Pinal Dave
SQLAuthority News
Quest, SQL Wait Stats, Webinar
1 Comment

This blog will share details about the free webinar –  SQL Performance Monitoring with Wait Statistics Scripts. Let us discuss it today.

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Jun25

SQL SERVER – SUM(1) vs COUNT(*) – Performance Observation

Pinal Dave
SQL Performance
Execution Plan, SQL Scripts, SQL Server
No Comments

One question that kept on coming up was SUM(1) vs COUNT(*) – Performance Observation. Well, let us see that today.

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Jun24

SQL SERVER – COUNT(*) Collection of Articles

Pinal Dave
SQL Performance
Execution Plan, SQL Server
No Comments

Today we are building a Collection of Articles that have recently generated interest on the blog as well as on the YouTube channel –  SQL in Sixty Seconds. 

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Jun23

COUNT(*) and COUNT(1): Performance Battle – SQL in Sixty Seconds #176

Pinal Dave
SQL Video
Execution Plan, SQL in Sixty Seconds, SQL Scripts, SQL Server
1 Comment

COUNT(*) and COUNT(1): Performance Battle – which one is better for performance? I got this question after watching my previous video.

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Jun22

COUNT(*) and Index Frequently Asked Questions

Pinal Dave
SQL Tips and Tricks
SQL Index, SQL Scripts, SQL Server
No Comments

However, before you read today’s COUNT(*) and Index Frequently Asked Questions I suggest you watch the video COUNT(*) and Index.

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Previous 1 … 48 49 50 51 52 53 54 … 830 Next

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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