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I want to calculate the upper and the lower quartile of the value what I call "diffs" in these fiddle with my DB and the query

How can I do this with SQLite?

There's an extension on the http://www.sqlite.org/contrib?orderby=date, extension-functions.c, which has these commands.

How can I integrate such a query in my Windows-XAMPP Environment?

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closed as unclear what you're asking by Max Vernon, RolandoMySQLDBA, dezso, Colin 't Hart, RLF Jun 3 at 12:54

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