index vs temporary table

Can I create INDEX foron a TEMPORARY TABLE generated via LOAD DATA INFILE?

Is it feasible? How do I do this?

euh? what exactly do you want to do?

I first create a TEMPORARY TABLE.

Then I use LOAD DATA INFILE to load the file into the TEMPORARY TABLE I just created.

I'll then perform SELECT queries on that TEMPORARY TABLE.

I was wondering if I can't create a temporary INDEX in increase the query performance?

If yes, how do I do this?

I don't see why not.
I also don't see why you didn't just try it to see what happened....