How To Update Mongodb Array Values

I have a document stored in mongodb like this 'Fiction' : [ { 'SNo': '1', 'authorName' : 'Enid Blyton', 'bookNam

Solution 1:

Use the $ positional operator in your update as this identifies the element in an array to update without explicitly specifying the its position in the array:

db.fiction.update({"Fiction.SNo":"1"},{$set:{"Fiction.$.Amount":135}})

Solution 2:

The $ operator is used to iterate through the array list while updating.

Your query would be : db.Fiction.update({"Fiction.SNo":"1"},{$set:{"Fiction.$.Amount" : 135}})