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TSQL Tuesday #188 Growing community

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I am responding late to a T-SQL Tuesday invite from John Sterrett. John’s call...

Time to Revive our YouTube Channel

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It’s been forgotten about and neglected for few years but I’ve decided to dust...

Microsoft MVP 2025: Continuing the Data Platform Journey

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I am honored to announce that I have been renewed as a Microsoft MVP...

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How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory

By Chandan Shukla

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People Make Odd Choices

By Grant Fritchey

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SQL Server 2022 Clusterless Distributed Availability Group

By Pablo Echeverria

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Question of the Day

Query Plan Regressions --

For the Question of the day, I am going to go deep, but try to be more clear, as I feel like I didn't give enough info last time, leading folks to guess the wrong answer... :) For today's question:  You’re troubleshooting a performance issue on a critical stored procedure. You notice that a previously efficient query now performs a full table scan instead of an index seek. Upon investigating, you find that an NVARCHAR parameter is being compared to a VARCHAR column in the WHERE clause. What is the most likely cause of the query plan regression?

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