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Monthly Archives: September 2019
Filtered Index on NULL values is still doing a Key Lookup
“Filtered index” is really useful when you want to customize and narrow down the data usage and it works like a magic with the minimized index maintenance cost.
When you are creating a filtered index on IS NULL condition, be aware that we need to include the same column. Continue reading
SQL Server Performance Tuning using Filtered Covering Index
SQL Server Performance Tuning using Filtered Covering Index takes you through a simple scenario where filtered indexes are helpful to improve the performance of frequently used queries. Before starting, I assume that you know “WHAT” a filtered index is or … Continue reading