In many cases while building a report or dashboard we will be in situation to show the user data comparison like difference between current month and last month or current week with previous week. so here is the example to do that in mongo aggregation query. To get the earning of the last 30 days […]

If you have fields in mongo which has lots duplicate values, but you want to analysis it by getting unique then you can that as I done as follows. You can use the distinct method to retrieve unique values from a specific field in a collection. The distinct method returns an array of distinct values […]