I have a challenge where I need to extract the ObjectID values from multiple documents stored in a single collection and store them in a single array. I'm currently stuck on how to achieve this task. Below is what I've tried so far:
app.get("/sessionID", (req, res) => {
use iRateIt;
var value = iRateIt.responses.count();
for (var i = 0; i < value; i++){
//code to save ID values into an array
}
});
One potential solution is to utilize the aggregation query below. Keep in mind that this approach may not be effective for datasets containing a large number of documents.
db.<collection>.aggregate([{"$group":{"_id":null,"idArray":{"$addToSet":"$_id"}}}])
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