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db.queries.aggregate([{"$lookup":{"from":"entries","as":"entries","let":{"query":"$query"},"pipeline":[{"$set":{match:{"$switch":{"branches":[{"case":{$and:[{"$ne":["$$query.type",null]},{"$ne":["$$query.subtype",null]},{"$eq":["$$query.type","$type"]},{"$eq":["$$query.subtype","$subtype"]}]},"then":true}],"default":false}}}},{"$match":{match:true}}]}}])