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It would be rather handy to do things like :

db.test.find({a:{$gt:b}})

In other words, be able to query based on document fields comparison. Any plans for this?

duplicates

SERVER-30731 Add $expr support in MatchExpression outside of aggregation

is duplicated by

SERVER-2549 expression native support , find({ a: { $lt : b*2 } })

is related to

SERVER-2549 expression native support , find({ a: { $lt : b*2 } })

SERVER-7623 comparison operation right hand side should be expressions

SERVER-21091 Document Validation should allow comparisson between attributes within a document

related to

SERVER-2507 variable field name in queries

(1 related to)

Participants:: David Storch, Jonathan Rezende, Matt Vogel, Remon van Vliet, Tess Avitabile