Machine Learning, Embedding, Image Processing, Meteorology.
WHERE time = '2019-09-20 05:00:00 UTC' ), ... SELECT SUM( (ref2_value - (ref1_value + ref3_value)/2) * (ref2_value - (ref1_value + ref3_value)/2) ) AS sqdist FROM refl1 JOIN refl2 USING (idx) JOIN refl3 USING (idx) The result? sqrt(0.1), which is much less than sqrt(0.5). In other words, the