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Count Distinct Values

MS Access – Count Distinct Values

June 17, 2021
Pinal Dave
SQL Tips and Tricks
MS Access, SQL Distinct, SQL Scripts, SQL Server

I love answering random questions and particularly when they are from my paying clients. Let me answer about MS Access and Count Distinct Values.

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Difficult to Remove

SQL SERVER – Identity Column is Difficult to Remove

June 16, 2021
Pinal Dave
SQL Tips and Tricks
SQL Identity, SQL Scripts, SQL Server

I discuss this during  Comprehensive Database Performance Health Check. It is true that the identity Column is Difficult to Remove.

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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.

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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.

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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.

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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.

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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.

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