Mongodb get month from date

You can use the following basic syntax to perform a query with a date range in MongoDB:

db.collection.find({
    day: {
        $gt: ISODate("2020-01-21"),
        $lt: ISODate("2020-01-24")
    }
})

This particular query will return all documents in the collection where the “day” field is greater than 2020-01-21 and less than 2020-01-24.

Note that $gt indicates “greater than” and $lt indicates “less than.”

You can also use $gte for “greater than or equal” and $lte for “less than or equal.”

The following examples show how to use this syntax in practice with a collection sales with the following documents:

db.sales.insertOne({day: new Date("2020-01-20"), amount: 40})
db.sales.insertOne({day: new Date("2020-01-21"), amount: 32})
db.sales.insertOne({day: new Date("2020-01-22"), amount: 19})
db.sales.insertOne({day: new Date("2020-01-23"), amount: 29})
db.sales.insertOne({day: new Date("2020-01-24"), amount: 35})

Example 1: Find Documents Between Two Dates

We can use the following code to find all documents where the “day” field is between two specific dates:

db.sales.find({
    day: {
        $gt: ISODate("2020-01-21"),
        $lt: ISODate("2020-01-24")
    }
})

This query returns the following two documents:

{ _id: ObjectId("618548bc7529c93ea0b41490"),
  day: 2020-01-22T00:00:00.000Z,
  amount: 19 }

{ _id: ObjectId("618548bc7529c93ea0b41491"),
  day: 2020-01-23T00:00:00.000Z,
  amount: 29 }

Example 2: Find Documents After Specific Date

We can use the following code to find all documents where the “day” field is after a specific date:

db.sales.find({
    day: {
        $gt: ISODate("2020-01-22")
    }
})

This query returns the following two documents:

{ _id: ObjectId("618548bc7529c93ea0b41491"),
  day: 2020-01-23T00:00:00.000Z,
  amount: 29 }

{ _id: ObjectId("618548bc7529c93ea0b41492"),
  day: 2020-01-24T00:00:00.000Z,
  amount: 35 }

Example 3: Find Documents Before Specific Date

We can use the following code to find all documents where the “day” field is before a specific date:

db.sales.find({
    day: {
        $lt: ISODate("2020-01-22")
    }
})

This query returns the following two documents:

{ _id: ObjectId("618548bc7529c93ea0b4148e"),
  day: 2020-01-20T00:00:00.000Z,
  amount: 40 }

{ _id: ObjectId("618548bc7529c93ea0b4148f"),
  day: 2020-01-21T00:00:00.000Z,
  amount: 32 }

Note: You can find the complete documentation for the ISODate() function here.

Additional Resources

The following tutorials explain how to perform other common queries in MongoDB:

MongoDB: How to Query with “Like” Regex
MongoDB: How to Check if Field Contains a String