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The Pervasive Nature of Open Source

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This week there was a headline that said "Open Source Software Powers 96% of Modern Applications, New Study Finds" and if you stopped reading there, you might think, hey, it's not in the apps I work on. Or you might think that because you use OSS software, most of the world also does. Microsoft, Oracle, […]

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2024-12-07

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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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