Andy Warren

I started my SQL journey here at SQLServerCentral as one of the founders, helping to build a place to share and learn that continues to thrive under the editorial guidance of my friend Steve Jones. I've done a lot of volunteer work over the years ranging from our local SQL group (oPASS, SQLOrlando) to serving on the Board of Directors of PASS to designing and building the framework of SQLSaturday (which has gone on to produce more than 1000 locally managed events since we started in 2007). These days I manage a DBA team, but over the years I've been a trainer, consultant, contractor, and DBA. I'm rarely present on social media, the best way to contact me is here, LinkedIn, or via email.

SQLServerCentral Article

SQL Server 2005 Installation Adventures

In bringing the SQLServerCentral.com training center online, one of the challenges Andy Warren faced was developing an automated way to install software. Here we see some of the gotchas and difficulties that you might encounter as well with unattended installations of SQL Server.

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2006-08-10

11,506 reads

SQLServerCentral Article

A Look at GUIDs

Not many people enjoy using Globally Unique Identifiers (GUIDs), partly because they are cumbersome to type and work with for humans. However they fill a need and can provide some interesting benefits. SQL Server expert Andy Warren takes us through what a GUID is and how you can use it easily in your code.

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2006-07-27

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SQLServerCentral Article

SMO Basics

SQL Server guru Andy Warren has been working with all aspects of SQL Server for many years and is slowly upgrading his skills to SQL Server 2005. Here he takes a look at SMO basics, which is the replacement for DMO.

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2006-06-28

10,409 reads

SQLServerCentral Article

Attach and Detach..Again

Attaching and detaching databases is old hat these days right? Do you know how to reattach a database that has more than 16 files? Or do you know what happens if you try to reattach a database that had two log files but one is missing/deleted? And even if you know the answer to that - do you know how to fix it without restoring from backup? Maybe it's not ALL old hat just yet!

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2006-06-23 (first published: )

24,240 reads

SQLServerCentral Article

Brooke Philpott of sqlSentry

The guys that build software rarely get exposure of credit. Maybe that's why so many of them turn to open source where they get more well known. After a meeting at TechEd 2005, Andy Warren had the chance to get some interesting interview questions answered by Brooke Philpott, one of the 2 core developers of sqlSentry. And not a marketing guy.

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2006-01-19

5,779 reads

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Question of the Day

Fixing the Error

On SQL Server 2025, I have a database that has this collation: SQL_Latin1_General_CP1_CI_AS. I decide I want to run this code:

SELECT UNISTR('*3041*308A*304C*3068 and good night', '*') AS 'A Classic';
I get this error:Msg 9844, Level 16, State 4, Line 24 The char/varchar input type uses an unsupported collation. Only a UTF8 collation is supported with char/varchar input type in UNISTR function.What is the easiest way to fix this error?

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