In SQL, you can express the logic of what you want to accomplish without spelling out the details of how the database should do it. Nowhere is this more powerful than in constraints. SQL is declarative, and Joe Celko demonstrates, in his introduction to Declarative SQL, how you can write portable code that performs well and executes some complex logic, merely by creating unique constraints.
In the final Database Weekly of 2015, Steve Jones looks at a CIO's column on workplace change.
An alternative read-only routing technique for non-Microsoft clients.
SQL Injection isn't special code. It consists of regular, valid T-SQL that is unexpected by the application. Steve Jones notes that using the principle of least privilege can help to limit the damage from SQL Injection if the application fails to properly check input.
Azure SQL Database provides a number of benefits that leverage resiliency and redundancy built into the underlying cloud infrastructure. You can take advantage of these features in order to perform backup, restore, and failover tasks, which help you recover from human errors, service outages, or even regional disasters. In this article, Marcin Policht provides an overview of the primary capabilities incorporated into Azure SQL Database, in particular focusing on point-in-time restore
This Friday Steve Jones has a poll about which SQL Servers might impress you. Is there a company or installation that you think would really showcase the power and scalability of SQL Server?
A secret project is underway up in Redmond, according to sources not so high up in the development team. A port is partially working for various reasons. Read this exclusive scoop!
Oracle 12.1.0.2 can throw an ORA-01438 when importing an interval partitioned table. In this post, David Fitzjarrell suggests a work-around until Oracle patches the bug.
We all make mistakes, but it's important that we revise our code to correct them over time.
In this article we will talk about the Microsoft certifications related to Data Mining.
By Steve Jones
Next week I’m at VS Live in San Diego (register and join me) and...
Ten years ago today, I filmed a Pluralsight Play by Play on open source...
By Steve Jones
It’s time for T-SQL Tuesday again and this is a great prompt to start...
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Comments posted to this topic are about the item RegEx Functions II
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') AND BusinessEntityID IN (7,8)See possible answers