MongoDB between date range query - nested property - mongodb

Question

How to write query to return object between dates? Query should search nested property. I use $gte and $lte but it doesn't seem to work as I expected. I want to return 'task' object which has got history.startTime between two dates.
db.tasks.find({'history.startTime' : { '$gte': ISODate("2017-02-04T00:00:00.000Z"), '$lt': ISODate("2017-02-05T23:00:00.000Z")} }).pretty()
{
"_id" : ObjectId("588f53c5d00baa2558fd56ae"),
"desc" : "test3",
"category" : "Category1",
"project" : "Project1",
"_creator" : "582afb3800c1bc1f203edf39",
"history" : [
{
"startTime" : ISODate("2017-02-06T11:49:42.570Z"),
"stopTime" : ISODate("2017-02-06T11:49:45.725Z"),
"_id" : ObjectId("589862d9449b4629f8dbaba7"),
"dt" : 3.155
},
{
"startTime" : ISODate("2017-02-06T08:53:53.086Z"),
"stopTime" : ISODate("2017-02-06T11:47:58.098Z"),
"_id" : ObjectId("5898626e449b4629f8dbaba6"),
"dt" : 10445.012
},
{
"startTime" : ISODate("2017-01-30T15:30:46.287Z"),
"stopTime" : ISODate("2017-01-30T15:32:52.979Z"),
"_id" : ObjectId("588f5c2cd00baa2558fd56b0"),
"dt" : 126.692
},
{
"startTime" : ISODate("2017-01-30T13:55:09.738Z"),
"stopTime" : ISODate("2017-01-30T14:55:13.974Z"),
"_id" : ObjectId("588f53d1d00baa2558fd56af"),
"dt" : 3604.236
}
],
"isCompleted" : false,
"isPerforming" : false,
"duration" : 14179.095000000001,
"updated" : ISODate("2017-02-06T11:49:45.725Z"),
"creationDate" : ISODate("2017-01-30T14:55:01.045Z"),
"__v" : 4
}

Answer 1

It is an array. Your query won't work. You have to use $elemMatch.
db.tasks.find({
'history': {
$elemMatch: {
startTime: {
$gte: ISODate("2017-02-04T00:00:00.000Z"),
$lte: ISODate("2017-02-05T23:00:00.000Z")
}
}
}
});