Converting Rows to Columns (PIVOT) and Columns to Rows (UNPIVOT) in SQL Server
Learn how to convert row values into column values (PIVOT) and column values into row values (UNPIVOT) in SQL Server.
2015-06-11
5,039 reads
Additional Articles
Reusing T-SQL Code
Alex Kuznetsov, in an article taken from his book 'Defensive Database Programming with SQL Server', shows how DRY principles can be put in practice with constraints, stored procedures, triggers, UDFs and indexes.
2015-06-10
6,344 reads
Protecting Yourself from SQL Injection in SQL Server - Part 2
Aaron Bertrand has some advice on how to protect yourself from SQL Injection, looking at some specific common scenarios.
2015-06-09
4,756 reads
How to Get SQL Server Dates and Times Horribly Wrong
One of the times that you need things to go right is when you are doing analysis and reporting. This is generally based on time and date. A sure-fire way of getting managers upset is to get the figures horribly wrong by messing up the way that you handle datetime values in SQL Server. In the interests of peace, harmony and a long career in BI, Robert Sheldon outlines some of the worst mistakes you can make when using SQL Server dates.
2015-06-08
7,158 reads
System Stored Procedures for SQL Azure Linked Servers
Microsoft released the preview version of Azure SQL Database V12 in December of 2014. As a database administrator, you might wonder about the schema and security of these new data marts. Microsoft has supplied system stored procedures for the database developer to query the Linked Servers for this type of meta data, as John Miner explains.
2015-06-05
2,288 reads
The Importance of Database Indexing
In this article, James Munro demonstrates an example of a simple query without an index and then that same query again with the index. A simple introduction to database indexing.
2015-06-04
7,210 reads
Query Folding in Power Query to Improve Performance
In this tip Koen Verbeeck discusses query folding, how you can take advantage from it and how to make sure query folding takes place.
2015-06-03
3,661 reads
Cybercrime - the Dark Edges of the Internet
Criminal activity is a growing menace on the internet: This inevitably means more diligence is required by legitimate users in the face of an increasingly sophisticated criminal threat. Robert Sheldon describes some of the emerging threats and risks.
2015-06-02
4,544 reads
Converting Comma Separated Value to Rows and Vice Versa in SQL Server
Often while reporting you will encounter a situation where you will have comma separated values in a single column but you want to report them in rows. In other cases you might have values in multiple rows and want them to be a single value separated by comma or some other character. Arshad Ali demonstrates how to write queries in SQL Server to handle these scenarios quickly.
2015-06-01
5,990 reads
A Plethora of PowerShell Pitfalls: Part 2
There are some pitfalls in PowerShell for the unwary. Many people who are learning PowerShell come across quirks that can cause frustration. Michael Sorens continues his series, warning abut four of the most common PowerShell pitfalls and explains how to avoid them.
2015-05-29
7,299 reads
Blogs
Rolling Back a Broken Release
By Steve Jones
We had an interesting discussion about deployments in databases and how you go forward...
A bespoke reporting solution doesn’t have to cost the earth
By ChrisJenkins
You could be tolerating limited reporting because there isn’t an off the shelf solution...
Presenting with Visual Studio Code
A while back I wrote a quick post on setting up key mappings in...
Forums
Lots of FKs
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Real-time On-prem SQL Server Data in Excel – Over the Internet
Comments posted to this topic are about the item Real-time On-prem SQL Server Data...
Can You Let Go of Determinism
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Question of the Day
Lots of FKs
In SQL Server 2025, what are the most outgoing and incoming FK references a table can have?
See possible answers