sql order by - How to sort results by string length on MongoDB -

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i can on mysql 

select * table order length(field) asc

how can on mongodb?

mongodb 3.4 introduces $strlencp aggregation operator supports this. example:

db.collection.aggregate(     [         {$project: {             "field": 1,             "field_length": { $strlencp: "$field" }         }},         {$sort: {"field_length": -1}},         {$project: {"field_length": 0}},     ] )

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