SQL Server database engine doesn't have a MEDIAN() aggregate function. This is probably because there are several types of median, such as statistical, financial or vector medians. Calculating Medians are essentially a row-positioning task, since medians are the middle value of an ordered result. Easy to do in SQL? Nope. Joe Celko explains why.
2009-05-06
2,024 reads
Web Services has been a hot topic for a number of years now, but what, you may wonder, are these Data Services everyone's talking about lately? As the architecture of Web applications has changed and matured (with the popularity of Rich Internet Applications [RIAs], for example), there has been an increased awareness of the value of exposing raw data, minus any interface or formatting, to any service or application that wants to consume it.
2009-05-05
1,623 reads
OPENROWSET is a handy tool for retrieving data. Find out how to use the OPENROWSET function for SQL Server and Microsoft Access.
2009-05-05
4,399 reads
In the first part of this series of articles, Gail showed how to find the procedures that contributed most to performance problems. In this final part, she shows how to use query statistics to pinpoint the queries that are causing the biggest problems, and then use the query execution plans to find out which operations are the root cause.
2009-05-04
4,867 reads
Having completed our coverage of the Service Broker characteristics specific to SQL Server 2005 Express Edition, we now turn our attention to Reporting Services. In this article, we will present the initial setup process, leaving discussion of configuration, management, security, and usability for future installments.
2009-05-04
2,776 reads
Part 11 of our series on "Microsoft Windows PowerShell and SQL Server 2008 AMO" discusses how to generate a script for given dimension of the Analysis Service database to XMLA format file.
2009-05-01
2,122 reads
Microsoft SQL Server 2005 provides nonlocking, nonblocking read consistency to your users through snapshot isolation and read committed isolation using row versioning. Find out when you can use these features to improve performance and reduce latency in your applications.
2009-05-01
2,535 reads
The first installment of this series describes the steps to configure a two-node Peer-to-Peer replication topology.
2009-04-30
1,941 reads
Discover the flexibility and power of using ANSI SQL to reshape and transform hierarchical structures.
2009-04-30
2,034 reads
The SQL Server 2005 Driver for PHP is a Microsoft-supported extension of PHP 5 that provides data access to SQL Server 2005 and SQL Server 2008. The extension provides a procedural interface for accessing data in all editions of SQL Server 2005 and SQL Server 2008. The SQL Server 2005 Driver for PHP API provides a comprehensive data access solution from PHP, and includes support for many features including Windows Authentication, transactions, parameter binding, streaming, metadata access, connection pooling, and error handling.
2009-04-29
2,116 reads
2025 exposed a growing gap between AI ambition and operational reality. As budgets tightened...
By John
When organizations migrate workloads to Azure, the focus is usually on architecture, performance, and...
By Brian Kelley
There's a great article from MIT Technology Review about resetting on the hype of...
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If I create a multiple column Primary Key constraint, what is the most number of bytes I can include in the constraint?
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