In ~which venue~ did you taste the most beers?
Logical Approach:
*group by* venue
*sort* by count
*limit* by *1*
Pipeline:
db.beer.aggregate( [
{ '$group' : {
*'_id' : '$venue_name',*
*'count' : { '$sum' : 1 },*
} },
{ '$sort' : { 'count' : -1 } },
{ '$limit' : 1 },
] ).pretty()