将字符串数转换为在mongodb和python中浮动

Question

I have a huge data in mongodb database and I want to figure out the data distribution such as min value, max value, average, and so on. My problem is the data type is string instead of integer or float so I can't sort the data, calculate the average etc. is there a way to convert datatype from string to float within pipeline? For example, to convert string date to date type, there is $dateFromString(aggregation)

Or any other better idea to solve this problem?

Answer 1

Since MongoDB is based off of Javascript, iirc, you can use the function 'parseFloat' to try to convert another data type to a float. There is also a 'parseInt' which tries to convert to an integer in case you need that.