There are a number of real-life reporting tasks in SQL that require a 'gaps and islands' analysis. There are a number of techniques around that work, but finding ones that scale well makes for a tougher, but interesting, challenge.
2014-02-28
3,824 reads
Some SQL problems are intriguing because, just when good methods emerge and are accepted, other alternative solutions are discovered. The fun of exploring problems such as 'Gaps and Islands' is all the greater when we have a thorough test-harness to try out the alternative solutions.
2013-08-13
2,738 reads
By Steve Jones
This is my last week of the year working (I guess I come back...
By Steve Jones
suente– n. the state of being so familiar with someone that you can be...
Anyone (everyone?) who has ever tried to learn a programming language knows that to...
I wrote a PowerQuery that parses a table from a PDF, and I want...
Comments posted to this topic are about the item Attaching an SQL Server database...
Comments posted to this topic are about the item Superseded Indexes
Which of these indexes is superseded by another?
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