30.11.2015 | Hans-Jürgen SchönigFlexible grouping: Some dirty SQL trickery
While doing PostgreSQL consulting for a German client, I stumbled over an interesting issue this week, which might be worth sharing with some folks out on the Internet, it’s all about grouping. Suppose you are measuring the same thing various times on different sensors every, say, 15 minutes. Maybe some temperature, some air pressure or […]
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