mongodb - Order tweet according to created_at field -


when using twitter stream api retrieve tweets, each tweet downloaded its

created_at

field, string field in format, e.g.,

mon sep 01 00:00:00 +0000 2014

i stored these tweets in mongodb database. order tweets according date, if ask mongodb order them based on created_at field, string:

db.collection.find({},{created_at:1}).sort({created_at:1})

the dates ordered according lexicographic ordering, not want.

how can modify query order them based on date , not on string? tried isodate objects, since field string, not work.

thanks.

by using mapreduce:

db.rawtweets.mapreduce(     // map     function() {         emit(             // "thu jul 17 03:21:42 +0000 2014"             new date(date.parse(this.created_at.replace(/(\+\s+) (.*)/, '$2 $1'))).tolocaledatestring(),             1         );     },      // reduce     function(key, values) {         return array.sum(values)     },      {         query: {},         out: "rawtweetscount"     } )

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