How to detect the mongoDB query has fetched all the records?

Question

I am using below query to fetch the data from mongoDB

collection.find({_id: "34534534"}, { cont: {$slice:[count,10]} })

each time when I call this query it returns the data of 10 records and count is the variable which keeps on changing like -30,-40, etc. How to know that query has reached to last 10 record?

Answer 1

collection.find({_id: "34534534"}, { cont: {$slice:[count,11]} })

Just change the limit to 11. The elapsed time is nearly equal to your code, but give you the chance to see if has more records.