You need a SQL Server-based application that will work with huge amounts of data and must perform calculations of startling complexity. How far will you go to deliver the required performance?
2014-01-06
183 reads
What often starts out as a simple, quick process, gradually expands over time, as developers use SQL Agent to schedule new data feeds, add more complex transformations...
2013-10-28
230 reads
We know a lot about how great exponents of the DBA profession work, but the role is changing rapidly. What makes a great Data Scientist? Or a great BI specialist?
2013-06-24
285 reads
While backup to the Cloud may be useful in terms of optimizing storage across the enterprise, for DBAs it remains essential that they retain fast, easy, access to the backup files. Azure Explorer is a free tool that might help.
2013-04-29
88 reads
Is there a sound technical reason why SQL Azure can't support extended properties?
2013-02-25
185 reads
It is late evening. Something is wrong with a database. You narrow down the possibilities, getting more frustrated and puzzled. Stay calm. Check the inputs systematically. No! The data going into that table is right, but when you then read it in the table, it's wrong. Why did I stop believing in the supernatural? Then it hits you. Every time it comes as a surprise. They're using triggers. (This editorial was originally published on Nov 10, 2008)
2013-02-19 (first published: 2008-11-10)
637 reads
It is easy to become overwhelmed by server symptoms (aka metrics), in the forlorn hope that the more we collect, the clearer a picture we'll assemble of what ails the server. We should, of course, be looking at the whole patient.
2013-02-04
143 reads
Tony Davis argues that the Standards and best practices exist to avoid being hacked, but implementing them requires time and investment and often there simply doesn't seem to be the will to do it.
2012-11-26
120 reads
Index fragmentation can certainly cause performance problems, but should it really dictate the way we design our clustered indexes?
2012-10-01
397 reads
Tony Davis argues that the WITH REPLACE option of the RESTORE DATABASE command is a case where the naming of the option masks its true "JFDI" nature…
2012-04-02
155 reads
By Steve Jones
I type fairly well. Well, I type fast, but I do wear out a...
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...
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