Query Tuning, Why Bother?
Today Grant wonders why we spend so much time trying to learn about query tuning.
2022-07-23
298 reads
Performance and Tuning
2022-03-09
534 reads
Diagnose and resolve latch contention on SQL Server
This guide describes how to identify and resolve latch contention issues observed when running SQL Server applications on high concurrency systems with certain workloads.
2021-08-30
More on Column Choice and Order for Multi-column Non-Clustered Indexes
In the last year I’ve published articles on indexes to include Indexes: When Column Selectivity Is Not Always A Requirement – SQLServerCentral and Query Optimizer Suggests Wrong Index and Query Plan -- Why? – SQLServerCentral. This article is a continuation of just how the optimizer interacts with the index wizard. We’ve all heard and read […]
2021-07-07
3,690 reads
Performance Tuning Means 3 Things
Brent Ozar discusses performance tuning and how From the outside it looks more complicated than it is, but at the end of the day, it always comes back to just 3 knobs and knowing which ones you can turn.
2020-02-07
A Self-Tuning Fill Factor Technique for SQL Server – Part 2
Introduction Fill Factor is a parameter most of us have ignored because there is no definitive way to calculate what the correct value should be. Part 1 of this series describes a new technique to dynamically determine index fill factors for all indexes within a database. Part 2 covers an analysis of the data collection […]
2019-08-27
3,948 reads
Waits and Queues
This week Steve is wondering if you know how to use waits and queues for troubleshooting.
2019-08-23
636 reads
A Self-Tuning Fill Factor Technique for SQL Server – Part 1
Introduction So what’s all the fuss about Fill Factor? It is a SQL Server parameter I’ve ignored for 20+ years. The main reason was/is I’ve had no idea about what value to use. There is just no documented definitive guidance. Back in April at SQL Saturday #830 - Colorado Springs, I attended two sessions by […]
2019-08-20
8,882 reads
Are your CPU-intensive queries running slowly? Check your VM type.
When you build a VM for SQL Server in Amazon EC2, Azure VMs, or Google Compute Engine, it’s all too easy to overlook the CPU speeds that you’re getting.
2019-05-03
A Brief History of Deadlock and Modern Approach of Resolution
Deadlocks have been constant troublemakers for database professionals for years. They seem to show up from nowhere and keep on happening again and again. Pinal Dave provides some oversight.
2019-04-05
Blogs
Another Change
By Steve Jones
Today Redgate announced that we are partnering with Bregal Sagemount, a growth-focused private equity...
Using Prompt AI to Help Setup Data Analysis
By Steve Jones
I used Claude to build an application that loaded data for me. However, there...
NVMe vs PVSCSI: Real-World Performance Testing for SQL Server Workloads on VMware
End-to-end NVMe vs PVSCSI testing over NVMe/TCP to a Pure Storage FlashArray: TPC-C and...
Forums
Simplifying WHERE Condition with LIKE test on multiple columns
Good Evening, Is there a simpler way to rearrange the following WHERE condition: [Column_1]...
Which Table I
Comments posted to this topic are about the item Which Table I
Using Python notebooks to save money in Fabric: The Fabric Modern Data Platform
Comments posted to this topic are about the item Using Python notebooks to save...
Question of the Day
Which Table I
I have this code in SQL Server 2022:
CREATE SCHEMA etl;
GO
CREATE TABLE etl.product
(
ProductID INT,
ProductName VARCHAR(100)
);
GO
INSERT etl.product
VALUES
(2, 'Bee AI Wearable');
GO
CREATE TABLE dbo.product
(
ProductID INT,
ProductName VARCHAR(100)
);
GO
INSERT dbo.product
VALUES
(1, 'Spiral College-ruled Notebook');
GO
CREATE OR ALTER PROCEDURE etl.GettheProduct
AS
BEGIN
SELECT ProductName
FROM product;
END;
GO
When I execute this code as a user whose default schema is dbo and has rights to the tables and proc, what is returned? See possible answers