>>Do you know which queries use(d) the other index? We discussed this issue a bit more with Denis. He is suggesting to create this index with DESC sort for the best performance. So, your other queries also use it in DESC order, it will make sense. Or have this index in DESC sort and restore the original index?
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>DESC does not apply in this case. So, I wouldn't think it would be a factor.
Your query sort it in DESC order, so it does apply.
If it's not broken, fix it until it is.
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