Do you wonder why SQL Server ignores an index? Do you think about how you can deal with this problem? When you include too many columns in a query you decrease index selectivity. So, if you write a query like “Select * From …” the chance of choosing your nonclustered index will decrease.
2025-03-03
Learn how to implement data partitioning within Microsoft Fabric to improve performance for Lakehouses, Warehouses, and Pipelines.
2025-01-13
Learn about SQL Server OPTION RECOMPILE and if used on simple, frequently executed queries if it causes excessive CPU usage.
2025-01-08
Every SQL Server developer has heard it: "Don't use NOLOCK in production!" But this common rule isn't as simple as it seems. Sometimes, what seems like a bad practice can actually be the right choice. Let's explain what NOLOCK really does in simple terms. When you use NOLOCK, you're telling SQL Server "just show me […]
2024-12-09
5,146 reads
What is a distributed monolith vs. a microservice architecture? Steve has a few thoughts today.
2024-12-06
166 reads
Let’s say we have a couple of update statements we need to run every 15 minutes in the Stack Overflow database, and we’ve built indexes to support them:
2024-11-20
Learn about different ways to improve the performance of full wild card text searches to find strings in SQL Server tables.
2024-11-01
This article will explore how SQL Server chained CTEs might make troubleshooting code harder and whether you should stop using CTEs altogether.
2024-10-23
Learn how to use the SQL Server Query Store to find CPU-intensive queries and how you can use Query Store to resolve these issues.
2024-10-09
This article explores how raising the Cost Threshold for Parallelism (CTFP) affects missing index recommendations in SQL Server along with examples.
2024-09-25
Here’s the scenario: one of my SQL Server instances migrated to the DR array....
By Steve Jones
We are product focused at Redgate Software. Here is another of our values that...
By Zikato
A fugitive cyber-criminal, a wingsuit, and 24 million flight records. Somewhere between Doha and...
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Comments posted to this topic are about the item The SQL Server 2016 Plan
In SQL Server 2025, I run this code:
select bit_count(-1)What is returned? See possible answers