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By Rohit Garg
🔍 Demystifying KTLO: A Deep Dive into Keep The Lights On Work in IT...
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The PASS Summit goes on tour this year, with a September stop in Dallas....
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Settings That Could Be Hurting Your Performance If you’ve ever created a new SQL...
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Comments posted to this topic are about the item 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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