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parzibyte/remover_duplicados.js

Created March 7, 2018 23:59
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remover_duplicados.js
db.coleccion.aggregate([
{ "$group": {
"_id": { "laClave": "$laClave" },
"dups": { "$push": "$_id" },
"count": { "$sum": 1 }
}},
{ "$match": { "count": { "$gt": 1 } }}
]).forEach(function(doc) {
doc.dups.shift();
db.coleccion.remove({ "_id": {"$in": doc.dups }});
});
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