Capacity Planning Using Performance Data
Erin Stellato discusses the types of performance data needed to help with capacity planning.
Erin Stellato discusses the types of performance data needed to help with capacity planning.
One way to improve SQL Server performance is to use as few resources as possible. In this post Rahul Mehta demonstrates how you can do this by disconnecting queries post-execution with a simple change in SSMS.
Azure SQL Data Warehouse is a cloud-based, scale-out database capable of processing massive volumes of data, both relational and non-relational. Built on our massively parallel processing (MPP) architecture, SQL Data Warehouse can handle your enterprise workload.
This article shows how to reduce the periodic spikes in the CPU that are caused by the periodic-executing jobs. There is a good reason to make some changes for dismissing them.
We don't test software well enough. Obviously we don't write high enough quality software, but testing should catch more issues. Steve Jones talks about how you can perform better T-SQL testing.
Even a database development framework like Sql Server Data Tools (SSDT) doesn't get it right all the time, and there are ten deployment 'gotchas' in particular that can cause some head-scratching amongst developers to get right. From his unique perspective of creating a tool to make such deployments in SSDT less stressful, Dan Nolan discusses each pitfall and how to avoid it, whether you have ReadyRoll or not.
The way we write code impacts our users, but it can also impact our wallet, especially in cloud computing. Steve Jones wonders how many people bother to profile and test their code.
This article shows a few techniques that help in capturing deleted records.
Phil Factor ponders the use of toolchains in automation, and wonders if there might not be a better way.
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By Steve Jones
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I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers