Technical Article

SQL Saturday #154 | St.Louis, MO

Sept 15th, 2012 at the CAIT Campus of Washington University in St.Louis - 5 Jackson Avenue, Clayton, MO 63105

SQL Saturday #154 is the very first SQL Saturday event in the St.Louis area. It is a free one day event for SQL Server professionals and those wanting to learn about SQL Server. We are planning on a 4 track event with 200 attendees. We currently have several sessions aligned towards Database Administration, Application Development, Business Intelligence and professional Development Tracks. We also have several sessions focused on SQL Server 2012! Please visit our event website for more details and free registration.

SQLServerCentral Editorial

Finding a Balance

This editorial was originally published on Nov 19, 2007. It is being republished as Steve is on vacation. With the tremendous amount of digital storage that people can carry around these days, how do you balance the security risks.

Technical Article

AlwaysOn Architecture Guide: Building a High Availability and Disaster Recovery Solution by Using AlwaysOn Availability Groups

SQL Server 2012 AlwaysOn Availability Groups provides a unified high availability and disaster recovery (HADR) solution that improves upon legacy functionality previously found across disparate features. Prior to SQL Server 2012, several customers used database mirroring to provide local high availability within a data center, and log shipping for disaster recovery across a remote data center. With SQL Server 2012, this common design pattern can be replaced with an architecture that uses availability groups for both high availability and disaster recovery. This paper details the key topology requirements of this specific design pattern, including quorum configuration considerations, steps required to build the environment, and a workflow that shows how to handle a disaster recovery event in the new topology.

External Article

The Seven Sins against T-SQL Performance

There are seven common antipatterns in T-SQL coding that make code perform badly, and three good habits which will generally ensure that your code runs fast. If you learn nothing else from this list of great advice from Grant, just keep in mind that you should 'write for the optimizer'.

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Question of the Day

The Range of Customers

I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC):

orderid orderdate               customerid complete
3       2025-05-10 00:00:00.0002          1
21      2024-01-10 00:00:00.0003          1
15      2023-10-28 00:00:00.0004   1
13      2025-03-08 00:00:00.0006          1
11      2024-04-02 00:00:00.0007          1
If I run this query, how many rows are returned?
SELECT *
 from dbo.OrderHeader
 where customerid between 3 and '6'

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