The answer return empty. What did I do wrong?
var pipeline = [
Won 13 Oscars,
Won 1 Oscar
]
db.movies.aggregate([
{ $match: {
"awards": {
$regex: /Won \d+ Oscar/
}
}},
{ $group: {
_id: null,
"highest_rating": {$max:"$imdb.rating"},
"lowest_rating": {$min: "$imdb.rating"},
"average_rating": {$avg: "$imdb.rating"},
"deviation": {$stdDevPop: "$imdb.rating"},
"awards.wins": {$in: pipeline}
}}
])