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Unsolved CASE Expression

SQL Puzzle – Unsolved CASE Expression

April 20, 2021
Pinal Dave
SQL Puzzle
SQL CASE, SQL Scripts, SQL Server

Lots of people have asked me to share another puzzle. Well, let us see a very simple puzzle of Unsolved CASE Expression in today’s blog post.

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change password

SQL SERVER – Change Password at the First Login

April 19, 2021
Pinal Dave
SQL Tips and Tricks
SQL Login, SQL Scripts, SQL Server, SQL Server Security

Just like many other databases and applications, SQL Server also supports the feature to change password at the first login.

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adhoc queries

SQL SERVER – AdHoc Queries and Optimize for Adhoc Workloads

April 16, 2021
Pinal Dave
SQL Tips and Tricks
Ad Hoc Query, SQL CPU, SQL Scripts, SQL Server, SQL Server Configuration

Discussion with a client during the Comprehensive Database Performance Health Check.  The topic is AdHoc Queries and Optimize for Adhoc Workloads.

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OS Thread ID

SQL SERVER – Map SQL Server Session ID to OS Thread ID

April 14, 2021
Pinal Dave
SQL Performance
CPU Scheduler, CPU Threads, SQL CPU, SQL Scripts, SQL Server

He wanted to track the OS Thread ID in Performance Monitor. He asked me if I know any script which can Map SQL Server Session ID to OS Thread ID. 

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no work

SQL SERVER – Parallelism and Threads with No Work

April 7, 2021
Pinal Dave
SQL Performance
Execution Plan, Parallel, SQL Operator, SQL Scripts, SQL Server

One of my repeat clients asked me if a query goes to parallel do they use all the threads. We can have parallelism and thread with no work.

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install module

SQL Azure – Install Module Fails with Error

April 5, 2021
Pinal Dave
SQL Tips and Tricks
SQL Azure, SQL Error Messages, SQL Scripts, SQL Server

My client told me that they need help with an error related to Install Module on SQL Azure. Let us learn how we can fix the error.

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Index Scan

SQL SERVER – Top 1 and Index Scan

April 1, 2021
Pinal Dave
SQL Performance
Execution Plan, SQL Index, SQL Operator, SQL Scripts, SQL Server, SQL Top, SSMS

Scans are not always bad they are there because they are needed. Let us see a very simple demonstration about Top 1 and Index Scan.

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