MongoDB - Projection

projection means choosing simplest the essential records instead of deciding on whole of the facts of a report. If a report has five fields and you want to show only three, then pick out only three fields from them..

MongoDB's discover() technique, defined in MongoDB Query Document accepts second optional parameter that is list of fields that you need to retrieve. In MongoDB, while you execute find() method


The primary syntax of find() technique with projection is as follows


Consider the collection mycol has the subsequent statistics
   "_id" : ObjectId(124asd1sd4ae12), "title":"MongoDB"
 "_id" : ObjectId(124asd1sd4ae13), "identify":"NoSQL "
 "_id" : ObjectId(124asd1sd4ae14), "name":"Welookups "
"identify":"MongoDB "
"identify":"NoSQL "
"identify":"Welookups "

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