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A function to parse ranges
Here’s a quick function to parse a list of ranges (in a varchar variable) into a table of ranges. Might come in practical, for instance when parsing user arguments for a report. In this article, I’ll...
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Working with intervals
At one point or another, you’re going to come across intervals when working in SQL Server. You could say that an interval is where you don’t have a single value, but actually a range of values,...
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Distributing values with overlapping ranges
Today, we’re going to look at how to distribute values with what I call “overlapping ranges”. What I mean by that is that the value that you need to distribute has a given range and the objects you...
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Joining two SCD2 tables
A number of OLTP systems store dimension data in SCD2-like tables in order to retain all the revisions whenever the dimension information changes. In certain situations, you may come across a need to...
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Human-readable ranges of integers or dates
This is a real-world problem that I came across the other day. In a reporting scenario, I wanted to output a number of values in an easy, human-readable way for a report. But just making a long,...
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Turn your list into human-readable intervals
If you’ve worked with reporting, you’ve probably come across the following problem. You have a list of values, say “A, B, C, D, K, L, M, N, R, S, T, U, Z” that you want to display in a more...
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How to join overlapping date ranges
You can get into a situation where you have two tables with values associated with date ranges. What’s worse, those date ranges don’t necessarily have to align, which can make joining them a seemingly...
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