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
Articles
2015-06-10
574 reads
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
SQL Monitor Custom Metric: WriteLog wait time
This metric shows Writelog wait time in ms, per elapsed second. Writelog wait types occur when the log cache is being flushed to disk. If this happens all the time, it may suggest disk bottlenecks where the transaction log is stored.
2015-06-09
2,958 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
Demystifying the use of CASE in an ORDER BY statement
Chuck Hoffman exposes the mysteries of getting CASE statements to work in dynamic ORDER BY statements.
2015-06-05 (first published: 2012-04-26)
26,854 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
Blogs
Au Revoir for now
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
The SUM of Nothing: #SQLNewBlogger
By Steve Jones
I caught this interesting item over on Pinal Dave’s blog: Eleven Interview Questions that...
Forums
Building a SQL Server Fleet Audit That Leadership Actually Reads
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Smart AI Agents and Data Security
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RegEx Functions IV
Comments posted to this topic are about the item RegEx Functions IV
Question of the Day
RegEx Functions IV
I have this data in a table in a SQL Server 2025 database:
EmailAddressID EmailAddress 7 dylan0@ADVENTURE-WORKS.COM 8 Diane1@ADVENTURE-WORKS.COMIf I run this query, which row(s) are returned?
SELECT top 10 * FROM person.EmailAddress WHERE REGEXP_LIKE(EmailAddress, '^D', 'i') AND BusinessEntityID IN (7,8)See possible answers