Evgeny Garaev

A SQL Server DBA from New Zealand

Technical Article

Space allocated to the databases by disk letters

Found this useful for database migrations. This helps to identify how much space will need to be allocated for a new server and how a SQL Sever instance is using discs currently. Note. This won't show correct information on Linux instances and if you use mounting points in Windows.

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2021-04-23 (first published: )

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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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