Database
Gather/Aggregate results with MongoDB
Need to gather or aggregate some results with MongoDB? Easy!
You can use the group command over any collection to get a nice display of your results aggregated:
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db.collection.group( { key: { document: 1}, cond: { }, reduce: function( curr, result ) { result.total += 1; }, initial: { total : 0 } } ) |
You will get something like:
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[ { "document" : "my_first_document", "total" : 44124 }, { "document" : "my_second_example", "total" : 3503 }, { "document" : "still_another_one", "total" : 3928 } ] |
Here you are!