Date Between Query in Cosmos DB - azure

Question

I am in the building a simple event store in Cosmos DB that has documents that are structured something like this:
{
"id": "e4c2bbd0-2885-4fb5-bcca-90436f79f155",
"entityType": "contact",
"history": [
{
"startDate": 1504656000,
"endDate": 1504656000,
"Name": "John"
},
{
"startDate": 1504828800,
"endDate": 1504828800,
"Name": "Jon"
}
]
}
This might not bet the most efficient way to store it but this is what I am starting with. But I want to be able to query all contact documents out of the db for a certain period of time. The startDate and endDate represent the time the record was valid. The history currently contains the entire history of the record which probably could be improved.
I have tried creating a query like this:
SELECT c.entityType, c.id,history.Name, history.startDate FROM c
JOIN history in c.history
where
c.entityType = "contact" AND
(history.StartDate <= 1504656001
AND history.EndDate >= 1504656001)
This query should return the state of the contact for 9/7/2017 but instead it is returning every one of the history. I have played with several options but I am not sure what I am missing.
I have also tried setting the index (maybe that is the issue?) So I have included the indexing policy here:
{
"indexingMode": "consistent",
"automatic": true,
"includedPaths": [
{
"path": "/*",
"indexes": [
{
"kind": "Range",
"dataType": "String",
"precision": -1
},
{
"kind": "Range",
"dataType": "Number",
"precision": -1
}
]
}
],
"excludedPaths": []
}
What am I missing? Is the index correct? Is my query correct for a date between query?

Answer 1

You have two issues. One is addressed by Matias in comment.
Second, your condition is history.StartDate <= 1504656001 AND history.EndDate >= 1504656001.
play with the range for e.g. history.StartDate >= 1504656001 AND history.EndDate <= 1504656111.