r mongolite - date query

Question

Question

Using the mongolite package in R, how do you query a database for a given date?

Example Data

Answer 1

as this question keeps showing up at the top of my google results when i forget AGAIN how to query dates in mongolite and am too lazy to go find the documentation:

the above Mongodb shell query,

db.test.find({"dte" : {"$gt" : new ISODate("2015-01-01")}})

now translates to

mong$find('{"dte":{"$gt":{"$date":"2015-01-01T00:00:00Z"}}}')

optionally, you can add millis:

mong$find('{"dte":{"$gt":{"$date":"2015-01-01T00:00:00.000Z"}}}')

if you use the wrong datetime format, you get a helpful error message pointing you to the correct format: use ISO8601 format yyyy-mm-ddThh:mm plus timezone, either "Z" or like "+0500"

of course, this is also documented in the mongolite manual