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Editorial Team
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Asked: 2026-05-13T18:20:59+00:00

Im looking to use a document database such as MongoDB but looking through the

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Im looking to use a document database such as MongoDB but looking through the documents I cant find much on queries that involve date functions. For example lets say that I’m asking one of the following questions of the DB:

  • “Tell me all the people who bought a product on tuesday”
  • “Get me all sales and group by month”

They are random questions but essentially they could be anything that has date functions. Would you have any idea how I would go about this?

Thanks, Chris.

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1 Answer

  1. Editorial Team

    For the first query the best bet would be to do a range query for dates in between the start and end of tuesday. Something like:

    db.foo.find({"purchase_date": {"$gt": monday_midnight, "$lte": tuesday_midnight}})

    This will be nicer syntactically when the following case is finished, so might want to vote for it:
    http://jira.mongodb.org/browse/SERVER-465

    For the second you’ll probably want to check out either PyMongo’s group or map_reduce methods, either of which can accomplish aggregation like that.

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