Filtered Indexes: The Developer’s Secret Weapon in SQL Server
Learn about filtered indexes in SQL Server, how they work, and how they can help improve performance.
2025-11-24
3,640 reads
Filtered Index
A Rolling Filtered Index in SQL Server
I recently resolved an issue where a query pulling data from the last 30 days would time out due to the table’s size and the lack of a supporting index. Creating a supporting index is possible, but not ideal; it will be very large and may not be useful for most queries and use cases. I wonder how I could implement a filtered index that follows time and is always limited to the last n days.
2025-09-10
Prevent Duplicate Records in SQL using Filtered Index
In this article, I share how an SQL Server filtered index solved the problem of preventing duplicates for new rows in a table.
2024-07-03
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The Last Binary Value of the Year
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Question of the Day
The Last Binary Value of the Year
What does this code return?
SELECT cast(0x2025 AS NVARCHAR(20))Image 1:
Image 2: 
Image 3: 
Image 4: 
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