MongoDB inserts float when trying to insert integer
MongodbMongodb Problem Overview
> db.data.update({'name': 'zero'}, {'$set': {'value': 0}})
> db.data.findOne({'name': 'zero})
{'name': 'zero', 'value': 0.0}
How do I get Mongo to insert an integer?
Thank you
Mongodb Solutions
Solution 1 - Mongodb
db.data.update({'name': 'zero'}, {'$set': {'value': NumberInt(0)}})
You can also use NumberLong.
Solution 2 - Mongodb
A slightly simpler syntax (in Robomongo at least) worked for me:
db.database.save({ Year : NumberInt(2015) });
Solution 3 - Mongodb
If the value type is already double, then update the value with $set command can not change the value type double to int when using NumberInt() or NumberLong() function. So, to Change the value type, it must update the whole record.
var re = db.data.find({"name": "zero"})
re['value']=NumberInt(0)
db.data.update({"name": "zero"}, re)
Solution 4 - Mongodb
Well, it's JavaScript, so what you have in 'value' is a Number, which can be an integer or a float. But there's not really a difference in JavaScript. From Learning JavaScript:
> The Number Data Type > >Number data types in JavaScript are floating-point numbers, but they may or may not have a fractional component. If they don’t have a decimal point or fractional component, they’re treated as integers—base-10 whole numbers in a range of –253 to 253.