Created
January 22, 2014 12:03
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mongoDB get Average
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| db.networkouts.group( | |
| { cond: {"instance_id": 'i-6da51c6a'} | |
| , initial: {count: 0, total:0} | |
| , reduce: function(doc, out){ out.count++; out.total += doc.average } | |
| , finalize: function(out){ out.avg = out.total / out.count } | |
| } ); |
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db.networkouts.group(
{ cond: {"instance_id": 'i-6da51c6a', time_stamp: {$lte: new Date('Tue Jan 21 2014 19:31:00 GMT+0900 (대한민국 표준시)')}}
, initial: {count: 0, total:0}
, reduce: function(doc, out){ out.count++; out.total += doc.average }
, finalize: function(out){ out.avg = out.total / out.count }
} );