Views in SQL can be difficult. It isn't easy to judge when to use them, It isn't always obvious how to determine if a view can be indexed or if it is updateable. Joe Celko takes a tricky topic and comes up with some helpful guidelines.
Microsoft has released the first version of a new sample database for SQL Server.
Karthik provides a simple solution to querying a table that has comma separated values.
Today Steve Jones talks about the risk inherent in any project, and how we should be aware of our mistakes, learn from them, and sometimes just give up when we've made too many.
When I began using LAST_VALUE, the results were not what I expected at all. Read on to learn the secret!
What is next for big data? Some experts claim that data "volumes, velocity, variety and veracity" will only increase over time, requiring more data storage, faster machines and more sophisticated analysis tools. However, this is short-sighted, and does not take into account how data degrades over time. Analysis of historical data will always be with us, but generation of the most useful analyses will be done with data we already have. To adapt, most organizations must grow and mature their analytical environments. Lockwood Lyon shares the steps they must take to prepare for the transition.
Natively consume JSON data from API sources with SQL 2016 and CLR
In order to keep the demands of the job under control, any DBA needs to automate as many as possible of the suitable tasks that their role demands. What makes a task suitable? How do you judge whether it is worthwhile? Can we take a 'managed', consistent, decision? Joshua Feierman explains the practicalities with a real example.
By Steve Jones
I type fairly well. Well, I type fast, but I do wear out a...
By way of background, a while back I did video called “My New Favourite...
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
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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