Table variables get a lot of bad press, and they deserve it. They are to query performance what the TSA is to air travel. No one’s sure what they’re doing, but they’ve been taking forever to do it.
2016-12-26
3,341 reads
Windows hasn't had a package manager in the style of the Advanced Packaging Tool (APT) of Linux distributions. Apt-get is a great way of installing packages and other software. We have Chocolatey, of course which has a growing library of software and even allows you to automatically update software. Now PowerShell has an 'official' way of using any system, such as NuGet, Chocolatey, GitHub or PSget. It is definitely useful and likely to mature into an indispensable tool for Windows users. Nicolas explains wh.
2016-12-23
3,951 reads
Erin Stellato discusses the types of performance data needed to help with capacity planning.
2016-12-22
6,527 reads
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.
2016-12-21
5,620 reads
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.
2016-12-21
3,192 reads
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.
2016-12-20
6,355 reads
Sometimes, it's necessary to have different versions of a database running in production. But how do you establish a single source of truth in source control? Alex Yates from DLM Consultants shows how to use object filters in SQL Compare to build multiple database versions from the same source.
2016-12-19
3,159 reads
During the development cycle, indexes will be placed on SQL Server tables to speed up performance when searching for records. Lots of thought probably has gone into creating just the right mix of indexes based on how developers think customers will use the system. But how do you tell if all the indexes are being used once your database has been implemented into production?
2016-12-19
8,251 reads
Microsoft has introduced an interactive C# scripting technology inside the Visual Studio 2015 environment. In this post, Jeffrey Yao looks at how we can use this to perform SQL Server tasks.
2016-12-16
5,175 reads
Feodor Georgiev explains how SQL Compare Pro makes it possible to automate the process of synchronizing a source and target database. By calling SQL Compare from a simple batch script, he shows how to make it work for a whole list of targets, one after another.
2016-12-15
3,077 reads
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
Comments posted to this topic are about the item How We Handled a Vendor...
Comments posted to this topic are about the item Cognitive Coverage
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