$cmp,$eq,$gt,$gte,$lt,$lte,$ne$setEquals,$setIntersection,$setUnion,$setDifference,$setLsSubset,$anyElementTrue,$allElemetsTruex: { $cond: { if: { $gte: [ "$qty", 250 ] }, then: 30, else: 20 } } x: {$cond : [{ $ne : ['$x', NaN] }, '$x', 0]}x: {$…