MongoDB query to fetch date records (ISODate format) in a range

MongoDBDatabaseBig Data Analytics

Let us create a collection with documents −

> db.demo178.insertOne({"DueDate":new ISODate("2019-01-10T06:18:20.474Z")});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e397bd89e4f06af551997f5")
}
> db.demo178.insertOne({"DueDate":new ISODate("2020-11-10T18:05:11.474Z")});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e397bf39e4f06af551997f6")
}
> db.demo178.insertOne({"DueDate":new ISODate("2020-03-15T07:05:10.474Z")});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e397c039e4f06af551997f7")
}
> db.demo178.insertOne({"DueDate":new ISODate("2020-06-11T16:05:10.474Z")});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e397c0f9e4f06af551997f8")
}

Display all documents from a collection with the help of find() method −

> db.demo178.find();

This will produce the following output −

{ "_id" : ObjectId("5e397bd89e4f06af551997f5"), "DueDate" : ISODate("2019-01-10T06:18:20.474Z") }
{ "_id" : ObjectId("5e397bf39e4f06af551997f6"), "DueDate" : ISODate("2020-11-10T18:05:11.474Z") }
{ "_id" : ObjectId("5e397c039e4f06af551997f7"), "DueDate" : ISODate("2020-03-15T07:05:10.474Z") }
{ "_id" : ObjectId("5e397c0f9e4f06af551997f8"), "DueDate" : ISODate("2020-06-11T16:05:10.474Z") }

Following is the query to fetch date records in a range −

> db.demo178.aggregate([
...{
...   "$redact": {
...      "$cond": {
...         "if": {
...            "$and": [
...               { "$gt": [ {"$hour": "$DueDate"}, 5] },
...               { "$lt": [ {"$hour": "$DueDate"}, 9] }
...            ]
...         },
...         "then": "$$KEEP",
...         "else": "$$PRUNE"
...         }
...      }
...   }
...])

This will produce the following output −

{ "_id" : ObjectId("5e397bd89e4f06af551997f5"), "DueDate" : ISODate("2019-01-10T06:18:20.474Z") }
{ "_id" : ObjectId("5e397c039e4f06af551997f7"), "DueDate" : ISODate("2020-03-15T07:05:10.474Z") }
raja
Published on 27-Mar-2020 12:10:03
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