in php i have created a cursor which hold group by result from MongoDB with following command.
$m = new MongoClient();
$db = $m->Forensic;
$c= $db->mobile_data;
// JavaScript function to perform
$reduce = "function (obj, prev) { prev.count++; }";
//group by source (number of messages);
$d = $c->group( ["Source" => 1], ["count" => 0], $reduce);
how can I sort my result based on "Source" key.
Thnaks
I would refer you to this question and see if that helps. There is also a link to the MongoDB documentation that might help you as well. There is also a decent explanation here also .
I'm just dabbling in group and sort in MongoDB myself.
One example I found was;
db.orders.aggregate([
{
$group: {
_id: "$cust_id",
count: { $sum: 1 }
}
},
{ $match: { count: { $gt: 1 } } }
])
Found an alternative solution
$m = new MongoClient();
$db = $m->Forensic;
$c= $db->mobile_data;
// JavaScript function to perform
$reduce = "function (obj, prev) { prev.count++; }";
//group by source (number of messages);
$d = $c->group( ["Source" => 1], ["count" => 0], $reduce);
//sort record
sort($d['retval']);
which will sort by Source field
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