mongo db how to search inside an array code example
Example 1: search inside array with object mongodb
db.users.find({awards: {$elemMatch: {award:'National Medal', year:1975}}})
Example 2: mongodb find array with element
// Finds all documents that have a property named "tags"
// which has at least one array element matching "red"
db.inventory.find( { tags: "red" } )