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WHERE clause

SQL SERVER – Avoid Functions in the WHERE Clause for Performance

September 13, 2023
Pinal Dave
SQL Performance
SQL Function, SQL Performance

Using SQL Server functions in the WHERE clause of your queries can significantly impact performance. Let us explore that in this blog post.

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brent pinal

SQL SERVER – Performance: OR vs IN – A Summary and Further Reading

September 12, 2023
Pinal Dave
SQL Performance
Clustered Index, Computed Column, SQL Index, SQL Server

The varied responses led me to write a detailed blog post to clarify the correct answer. If you missed it, you can read it here. Let us see A Summary and Further Reading.

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SQL SERVER - Performance: OR vs IN

SQL SERVER – Performance: OR vs IN

September 11, 2023
Pinal Dave
SQL Performance
Execution Plan, SQL Server Management Studio, SQL Statistics

I recently asked on Twitter an exciting question about OR vs IN. While I got lots of good answers, there were an equal amount of wrong answers.

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staitistics

SQL SERVER – The Comprehensive Guide to STATISTICS_NORECOMPUTE

September 8, 2023
Pinal Dave
SQL Performance
SQL Index, SQL Statistics

One such feature that plays a pivotal role in managing your SQL Server databases’ performance is the STATISTICS_NORECOMPUTE option.

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Title card: ps1 cannot be loaded because running scripts is disabled

SQL SERVER – Resolving the “ps1 cannot be loaded because running scripts is disabled” Error

September 7, 2023
Pinal Dave
SQL Tips and Tricks
PowerShell

When with PowerShell scripts, occasionally run into an error saying “ps1 cannot be loaded because running scripts is disabled on this system”.

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A caulking gun with a stuck cartridge holding up the work at its nozzle

Blocking Alert: A T-SQL Check for Sessions Blocked Too Long

September 6, 2023
Pinal Dave
SQL Tips and Tricks
Best Practices, Comprehensive Database Performance Health Check, SQL Server

Short blocking is normal. This check flags lock waits past a threshold and walks each chain to the session at the front of the line.

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maxduration

SQL SERVER – Understanding MAX_DURATION in Index Creation

September 5, 2023
Pinal Dave
SQL Performance
SQL Index

One particular option that can be specified during the index creation is MAX_DURATION. This blog post will explore this option.

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schema

SQL SERVER – How to Move a Table into a Schema in T-SQL

September 4, 2023
Pinal Dave
SQL Tips and Tricks
Schema

If you’ve ever wondered how to move a table into a schema in T-SQL, this post is for you. One ALTER SCHEMA TRANSFER command does the job.

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certificateoftrust

SQL SERVER – Fix – Error – The certificate chain was issued by an authority that is not trusted

September 1, 2023
Pinal Dave
SQL Tips and Tricks
SQL Connection, SQL Error Messages, SQL Server Security

ASP.NET Core applications can sometimes result in the error “The certificate chain was issued by an authority that is not trusted.”

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Gouache painting: a tea shop counter where one small wooden crate is checked twice: once close up under a magnifying lens, and once from across the room on a wide shelf; the crate's tag is vermilion

BDD vs TDD: One Small Feature, Two Ways to Test It

August 31, 2023
Pinal Dave
SQL Tips and Tricks
Best Practices, Developer, Software Development, Testing

BDD vs TDD is easy to mix up until you test the same feature both ways. This post checks one delivery rule with a unit test and then with a plain-language scenario, runs the unit test, and explains when each approach fits.

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