June 2025 Discount: Comprehensive Database Performance Health Check | Testimonials

Home
  • Consulting
  • Training
  • Free Videos
  • All Articles
    • Interview Questions and Answers
    • SQL Tips and Tricks
    • SQL Performance
    • SQL Puzzle
    • Big Data
    • Blog Stats
    • SQL Books
    • Search SQLAuthority
  • Downloads
  • Hire Me
  • Health Check
COUNT

SQL SERVER – COUNT(*) and Index Used

June 15, 2021
Pinal Dave
SQL Performance
Clustered Index, Execution Plan, SQL Index, SQL Scripts, SQL Server

DBA suspects those operations are using lots of clustered index scans. Let us discuss today COUNT(*) and Index Used. Let’s learn.

Read More
good or bad

Index Scans – Good or Bad? – SQL in Sixty Seconds #174

June 14, 2021
Pinal Dave
SQL Video
Execution Plan, SQL in Sixty Seconds, SQL Index, SQL Scripts, SQL Server

Index Scans – Good or Bad? Lots of people ask about this question and I have built a blog post on the topic – SQL SERVER – Index Scans are Not Always Bad.

Read More
index scan

SQL SERVER – Index Scans are Not Always Bad

June 11, 2021
Pinal Dave
SQL Performance
Execution Plan, SQL Index, SQL Scripts, SQL Server

Are Index Scans Bad? The answer No. Index Scans are Not Always Bad. This was in-depth discussed with my client during the Health Check.

Read More
Optimize for Adhoc

Optimize for Ad Hoc Workloads – SQL in Sixty Seconds #173

June 10, 2021
Pinal Dave
SQL Video
Ad Hoc Query, Execution Plan, SQL in Sixty Seconds, SQL Scripts, SQL Server, SQL Server Configuration

Today we are going to discuss if we should keep Optimize for Ad Hoc Workloads true or false. Let us see a detailed video about it.

Read More
Changing Password

SQL SERVER – Unlocking User Without Changing Password

June 9, 2021
Pinal Dave
SQL Tips and Tricks
SQL Password, SQL Scripts, SQL Server, SQL Server Security

If know the answer, I like to answer them. Today we are going to discuss Unlocking User Without Changing Password. Let us learn.

Read More
parallel queries

SQL SERVER – Table Variables, Temp Tables and Parallel Queries

June 7, 2021
Pinal Dave
SQL Performance
Parallel, SQL CPU, SQL Scripts, SQL Server, SQL Variable, Temp Table

I heard an interesting comment from a client and that made me write a blog post. Their point was about table variables, temp tables, and parallel queries.

Read More
different entry

SQL SERVER – Same Result Same Query Plan – Different Entry in Cache

June 2, 2021
Pinal Dave
SQL Performance
Ad Hoc Query, SQL Cache, SQL Scripts, SQL Server

The question I was asked was about a query that had the same result same query plan but the different entry in the cache, is that possible.

Read More
Previous 1 … 8 9 10 11 12 13 14 … 318 Next
  • SQL Interview Q & A
  • Testimonials
  • Search
  • Privacy Policy

© 2006 – 2025 All rights reserved. pinal @ SQLAuthority.com

Go to mobile version