So does Google, and it’s even worse there. In Google, the first page for "postgres window functions" is version 9.1, version 9.3, and 8 random tutorials. DDG ha

So does Google, and it’s even worse there. In Google, the first page for "postgres window functions" is version 9.1, version 9.3, and 8 random tutorials. DDG has 9.1, 9.3, tutorial (the same as Google…), but then you at least get 12, 11, and then some more tutorials.