A CTE is a temporary result set defined by a simple query, and is used within the execution scope of a single INSERT, UPDATE, DELETE, or SELECT statement. In this article we will explore how to define and use CTE's.
2024-04-03 (first published: 2015-03-18)
6,173 reads
SQL Server 2012 and later offer a very different type of index from the traditional b-tree, the in-memory columnstore index. These indexes use a column-based storage model, as well as a new 'batch mode' of query execution and can offer huge performance increases for certain workloads. But how are they built, how do they work, and why do they manage to have such a dramatic impact on performance? In this stairway, Hugo Kornelis explains all, with his usual mix of concise description and detailed demonstration.
2015-01-22
11,514 reads
This stairway will contain a series of articles that will expand on the T-SQL foundation that you learned in the prior two T-SQL stairways, Stairway to T-SQL DML and T-SQL Beyond the Basics. This stairway should help readers prepare for passing the Microsoft Certification exam 70-461: Querying Microsoft SQL Server 2012.
2014-12-11
19,276 reads
AlwaysOn is a complex set of technologies that is often mis-understood. In this Stairway you will learn about the AlwaysOn technologies, how they fit into the High Availability stack, and how to make good use of them.
2024-07-23 (first published: 2014-06-25)
16,857 reads
Virtualization is becoming more and more common, and without an understanding how virtualization works, the DBA will have blind spots when attempting to resolving performance issues, such as reduce resource contention, or improve the backup and restore operations, and so on.
2014-06-25
3,598 reads
The goal of this Stairway series is to provide a brief, practical and systematic guide to source controlling your SQL Server databases, so that you can then manage your ongoing development and deployment from a known version, within source control.
2014-04-16
3,029 reads
The possibilities for programming SQL Server platform were greatly enhanced with the addition of the SQLCLR subsystem. This allows code written in any .NET language to be incorporated into your SQL Server instance and called from a stored procedure or function. You can also create your own data types or aggregates for specialized purposes. This Stairway series will teach you how to get started writing your own CLR code and integrating it into SQL Server.
2013-12-27
13,498 reads
Following on from his Stairway to T-SQL DML, Gregory Larsen covers more advanced aspects of the T-SQL language such as subqueries.
2013-11-11
14,736 reads
Biml is a markup language that enables you to quickly represent a variety of database related models and constructs, including SSIS packages, models, permissions and more. This stairway helps you get started using the language to represent your objects.
2013-07-09
7,190 reads
XML has been part of the SQL Standard since 2003, and it is also essential for any DBA because so many of the dynamic management views return XML data. Now that the industry is more used to data defined by document markup, it is becoming more important than ever for Database Developers and DBAs to understand the technology and to know where it makes sense to use XML. In this series of articles, Robert Sheldon flexes his talent to make the complicated seem simple.
Note: This series of articles is now available as an eBook.
2012-08-14
6,224 reads
This month, I prompted bloggers to discuss whether good enough is perfect. Thank you to all...
By Steve Jones
Recently a customer asked if SQL Compare and SQL Data Compare can be used...
I have an application team that is insisting on daily (and for some, weekly)...
i see this in the definition of a linked server on our wh sql...
Is this even possible ? Tried with grant but to no avail. [sys].[database_role_members] and...
What does this code return in SSMS 20 from SQL Server 2019?
select '|' + CHAR(0)+'abc' + '|';See possible answers