Database
[{"bookData":{"bookName":"lotr","bookPart":"Part 3"},"library_name":"omega","libraryId":12166},{"bookData":{"bookName":"hp","bookPart":"Part 7"},"library_name":"omega","libraryId":12199},{"bookData":{"bookName":"hertu","bookPart":"Part 7"},"library_name":"omega","libraryId":9999}]
Query
db.collection.aggregate([{$match:{library_name:"omega",libraryId:12199,"bookData.bookName":"hp"}}])