MongoDB - Load a subset of documents for querying - sql

Question

I have a collection containing multiple clients, months, etc.
Each month I need to run a series of queries against the collection to retrieve metrics - basically a bunch of counts.
Most of those queries have the same 4 or 5 filters, with an additional 1-2 filters that change for each query.
//standard filters:
{ client: "ABC Corp",
environment: "Production",
device: "true",
registered: "true"
}
//special filters:
{ type: "typeA",
screen: "screen1" }
{ type: "typeA",
screen: "screen2" }
In MSSQL I would create a view containing the 4 standard filters, and query that view repeatedly, applying the additional 1-2 filters to retrieve the needed metrics.
Any suggestions about what MongoDB or basic JS approach I could use for this? My goal is to avoid hitting the collection over and over again with those same standard filters.
Thanks
V

Answer 1

You could use $out operator in aggregation framework to achieve this.
$out stage can output results into a new collection
For example:
db.collection.aggregate([
{
$match:
{
client: "ABC Corp",
environment: "Production",
device: "true",
registered: "true"
}
},
{
$out: "new_collection"
}
])
Then you can run your additional queries on the new_collection.
Your "view" collection will be recreated every time when you use it in $out stage but any indexes you defined on that collection will be left intact.