There are several decisions to be made when designing indexes for Memory-optimized tables in In-Memory OLTP, and to make the best choice, it pays to understand something about the nature and usage of memory-optimised indexes. Murilo Miranda continues his series by explaining how such an index is unlike a conventional index.
2016-06-10
4,346 reads
Aaron Bertrand rounds out his series on STRING_SPLIT() in SQL Server 2016 with additional tests comparing splitting techniques to TVPs.
2016-06-09
4,804 reads
Ahmad Yaseen takes a look at how to deal with an endpoint encryption compatibility error when using SQL Server's AlwaysOn Availability Group Wizard.
2016-06-08
2,497 reads
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.
2016-06-07
6,986 reads
Karthik provides a simple solution to querying a table that has comma separated values.
2016-06-06
8,568 reads
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.
2016-06-03
10,764 reads
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.
2016-06-02
6,359 reads
In this article, Fikrat Azizov describes the different approaches to maintaining statistics and shows how you can use the data from your servers for intelligent statistics updates.
2016-06-01
3,273 reads
For T-SQL Tuesday #78, Aaron Bertrand takes a look at whether RID Lookups are faster than Key Lookups, with a small battery of fairly simple duration tests.
2016-05-31
3,857 reads
The most frustrating thing with any new system is often just working out how to connect to it. Oddly, you can’t use SSMS with SQL Data Warehouse, but it is fine with SSDT, SSIS, Power BI desktop, sqlcmd, BCP, and a range of Microsoft cloud services - there are PowerShell Cmdlets too. Rob Sheldon provides the details.
2016-05-30
3,054 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