Mongo DB component not working
I have the following data in a mongo collection (datacollection):
{
"_id": ObjectId("54980efef7db7d9b018d375b"),
"sub_id": "1234567890",
"points": "10",
"oid": "1",
"name": "test",
"app": "e53abc6d12fea63c80e4c2e1d49e",
"source": "mysource",
"product_name": "browser",
"added": ISODate("2014-12-22T12:30:54.618Z"),
"added_human": "2014-12-22 06:30:54",
"checked": true
}
I really need to figure out the sum of the points grouped by date. The SQL query will look like this: SELECT DATE (added) as point_date, SUM (points) AS total_points FROM mytable WHERE added between 'from' AND 'and' GROUP BY DATE (added).
So, I am using the following aggregation:
db.datacollection.aggregate(
{
$match:{
"added" : {$gte:ISODate("2014-12-01"), $lt:ISODate("2014-12-25")},
"source":"mysource"
},
$group : {
"_id" : { month: { $month: "$added" }, day: { $dayOfMonth: "$added" }, year: { $year: "$added" } },
"total_points":{$sum:"$points"}
}
}
);
But it shows
"errmsg" : "exception: A pipeline stage specification object must contain exactly one field.",
How can this be fixed or is there a better way to do this calculation?
+3
source to share
2 answers
use this:
db.datacollection.aggregate(
{
$match:{
"added" : {$gte:ISODate("2014-12-01"), $lt:ISODate("2014-12-25")},
"source":"mysource"
}
},
{ $group : {
"_id" : { month: { $month: "$added" }, day: { $dayOfMonth: "$added" }, year: { $year: "$added" } },
"total_points":{$sum:"$points"}
}
}
);
You must use this format (each pipeline is paired {}
)
db.collection.aggrgation (
{ $group: ....},
{ $match : .... },
...
})
but you used:
db.collection.aggrgation (
{ $group: ....,
$match : ....,
...
}
})
+10
source to share