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adamgen/Update mongoose schema

Created July 25, 2018 21:16
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Update mongoose schema
// change old_key_name with new_key_name
db.collection.find().forEach(function(document) {
var old_key_name = document.old_key_name;
db.collection.update(
{ _id: document._id },
{
$set: {
new_key_name: old_key_name,
},
$unset: { old_key_name: '' }
}
)
})
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