Mongo using indexes with sort?
Unfortunately, as you have discovered, an $or clause can make life difficult for the optimizer.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.
Related Questions
How to restructure a Mongo document to actually hit indexes?
Individual indexes vs multiple field indexes?
MySQL not using indexes (“Using filesort”) when using ORDER BY?
Is it advised to created two separate indexes for the query to filter on one field and sort on another?
Sort tinytext time from mysql db query with sql or sort the array it produces using PHP?
Alphabetically sort using an insertion sort algorithm c?