In MongoDB mapreduce, how can I flatten the values object?

Question

I\'m trying to use MongoDB to analyse Apache log files. I\'ve created a receipts collection from the Apache access logs. Here\'s an abridged summary of what my

Answer 1

You can do Dan's code with a collection reference:

    function clean(collection) { 
      collection.find().forEach( function(result) {
      var value = result.value;
      delete value._id;     
      collection.update({_id: result._id}, value);     
      collection.update({_id: result.id}, {$unset: {value: 1}} ) } )};