The COUNT function is among the most used functions in the T-SQL codes. Even though COUNT is easy to use, it should be used carefully because it could often not return the desired result. For the big tables, the counting of the rows could cause blocking as well as take some more time.
2018-02-09 (first published: 2016-07-12)
10,938 reads
The majority of traditional database management systems are responsible for making sure that any changes to their data are consistently reflected in the results of subsequent queries. Azure Cosmos DB extends the range of consistency options by providing support for bounded-staleness, session, and consistent prefix models.
2018-02-09
2,650 reads
The new feature, Mobile Reports, was added to SSRS in 2016. It provides the ability to create attractive and useful dashboards that can run on devices and most browsers. Robert Cain shows you how to get started building Mobile Reports with the Mobile Report Publisher.
2018-02-08
3,562 reads
Erik shows that heaps have even more drawbacks under optimistic concurrency.
2018-02-07
2,743 reads
I created this article to demonstrate the use of derived columns inside a ForEachLoop Container for a client requirement for some auxiliary marketing reports. I found the Data Conversion tool useful to escape the problem of mismatched data types, which is an issue with versions of Microsoft SSIS.
2018-02-06
3,679 reads
Blocking in SQL Server is normal behavior, but excessive blocking can lead to many complaints and is a symptom of poor performance. SQL Server contains a vast amount of information that can help when troubleshooting performance issues like blocking, but understanding and gathering that information when you need it is a lot of work. Darko Martinovic explains his solution for a custom blocking report.
2018-02-06
3,868 reads
The advantage of Setting the readable secondary as Read-Intent Only will allow the secondary server to serve the read-only workload only if the connection string of the application contains Application Intent=Readonly parameter.
2018-02-05
17,078 reads
In this tip, Manvendra Singh will cover how to add another database to an existing Always On Availability Group.
2018-02-05
2,385 reads
It's 15 years after the beginning of the century. Time to eliminate the security exposure of SQL logins, and implement integrated security. Active Directory Groups make this easy for the DBA.
2018-02-02 (first published: 2015-12-21)
9,718 reads
In this tip, Edwin Sarmiento looks at how to create the Always On Availability Group with a listener name when using SQL Server on Linux.
2018-02-02
3,045 reads
By Steve Jones
anderance – n. the awareness that your partner perceives the relationship from a totally...
By gbargsley
We’ve all been there. Someone walks up and asks, “Is SQL Server having issues?”...
By Chris Yates
In the beginning, there was OLTP – Online Transaction Processing. Fast, reliable, and ruthlessly...
Hello, I think I need a recursive cte query but unsure of the logic....
Comments posted to this topic are about the item The Security of Old Tech
True or False: Tables with a SPARSE column consume more space than regular columns if most values are NOT NULL.
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