What is your favourite ~German~ beer?
db.beer.aggregate( [
{ '$match' : { 'brewery_country' : 'Germany' } },
{ '$sort' : { 'rating_score' : -1 } },
{ '$project' : { 'beer_name' : 1 } },
] ).pretty()
Result:
{
"_id" : {
"k" : "untappd_20140504143324",
"u" : "derick"
},
"beer_name" : "Tokyo* (16.5%)"
}
To get rid of the %_id% field too:
db.beer.aggregate( [
{ '$match' : { 'brewery_country' : 'Germany' } },
{ '$sort' : { 'rating_score' : -1 } },
{ '$project' : { *'_id' : 0*, 'beer_name' : 1 } },
] ).pretty()