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On the topic of analytical functions, I will be the first to say that they are not my strength. However that said, reading one article after another I am increasingly aware of what I am missing. I stumbled upon an excellent article demonstrating significant performance gains across the board from timing to resource utilization, all due to the use of analytical functions. I encourage you take some time and review the posting. more »
PermalinkIETester: Develop/test your site in IE 6, IE 7 and IE 8 RC1
When developing or testing your web application, you often have to support different browsers and versions. On Window machines testing for different versions of Firefox, Opera and Chrome is not a real problem as these browsers all allow you to install different versions on one machine. Only Internet Explorer (IE), is always a bit more difficult, because it?s integrated in the OS (Windows) of the machine. This mostly ends up installing multiple IE versions on multiple (virtual) machines, which is not a nice way of working when developing. Can we do this different and easier? more »
Virtual Columns in 11g
Oracle has supported stored expressions for many years, in views and function-based indexes. Most commonly, views enable us to store and modularise computations and expressions based on their underlying tables' columns. In more recent versions (since around the 8i timeframe), we have been able to index expressions using function-based indexes. Now, with the release of 11g, Oracle enables us to store expressions directly in the base tables themselves as virtual columns. more »