The PL/SQL Challenge effect

Rob van Wijk | Jul 16, 2010 07:20 +0000
In Google Analytics I noticed a strange peak in my page visits. On a normal weekday when I haven't posted something new, approximately 200 people visit one or more blogposts here. But on Thursday July 8, there were 299. When zooming in on that day, I noticed that my blogpost about SAVE EXCEPTIONS was visited 101 times, where 5 or 10 per day is normal for that blogpost. When something like this

European Summer Time

Rob van Wijk | Jul 15, 2010 14:32 +0000
I needed a function to determine how many hours fit in a given day. In the Netherlands, a function that does "return 24;" is not good enough. In the northern hemisphere, Daylight Saving Time is quite common. And in Europe, except Iceland, we have European Summer Time which states that the clock moves one hour forward on the last Sunday in March and it moves one hour backwards on the last Sunday