tejpratap46
/ mongodb_distinct_count.js
Created
May 25, 2016 09:06
— forked from clarkenheim/mongodb_distinct_count.js
MongoDB equivalent of an SQL query to get the distinct values of a field in a collection including the count of documents which have each distinct value (distinct with count)
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| //equivalent of MySQL "SELECT COUNT(*) AS `count`, `fieldName` FROM `someTable` GROUP BY `fieldName | |
| db.someCollection.aggregate([{"$group" : {_id:"$fieldName", count:{$sum:1}}}]); | |
| //as above but ordered by the count descending | |
| db.someCollection.aggregate([{"$group" : {_id:"$fieldName", count:{$sum:1}}}, {$sort:{'count':-1}}]); |