Mongodb query to update records uppercase to lowercase in bulk

use DATABASE_NAME;
db.CollectionName.find( {}, { 'FieldName': 1 } ).forEach(function(doc) {
db.CollectionName.update(
   { _id: doc._id},
   { $set : { 'FieldName' : doc.FieldName.toLowerCase() } },
   { multi: true }
)
});

The post Mongodb query to update records uppercase to lowercase in bulk appeared first on Techathon.