![]() Necessary cookies are absolutely essential for the website to function properly. With pretty print, you can get the expression results on the screen as shown above.ĭo you have any comments or ideas or any better suggestions to share? OnError: "An error occurred for the conversion", Using this option, one can easily create an aggregation pipeline using $Convert operation which lets you convert field type easily. Using Aggregation Operators like $convert In the above example, Ssn is a long number data type field that we are converting to string type. We will first login to MongoDB and then switch to using the required database and the collectionĭb.update( ) Please open the command prompt or Mongo shell and log in to your database using a connection string. Here you will get an option to choose the data type,Īs shown above, the manual approach can be used as needed.Ĭhange data type in Mongo Using Aggregation Type Expression Operators – An automated way One can easily change the data type of a field in the Mongo DB document I want to change this field to “ int” using MongoShell.Ĭhange data type using Mongo Compass UI or any other UI – Manual way ![]() I have a field name called “ EmpID” which is of type “ string“. I have below Mongo Collection where my fields are defined as below. The below approach discussed is very useful when you don’t want to delete or drop the mongo fields but rather want to change the type of a field. Using Aggregation Operators like $convert.Example – Convert a NumberLong to a String.Example – Convert a numeric value to a string in MongoDB.How to convert data type for all documents in Mongo DB.Example – Convert string to numerical values in MongoDB.Change data type in Mongo Using Aggregation Type Expression Operators – An automated way.Change data type using Mongo Compass UI or any other UI -Manual way.
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