Mongo vs SQL: 'select max(a) from t' vs 'db.t.group({key: {}, reduce: function(c,p) { if (c.a > p.a) p.a = c.a; }, initial: { a:-1 }})'
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Mongo vs SQL: 'select max(a) from t' vs 'db.t.group({key: {}, reduce: function(c,p) { if (c.a > p.a) p.a = c.a; }, initial: { a:-1 }})'