That explanation doesn't help me figure out how to help you, unfortunately. What information are you trying to check?

Also, if this DB isn't yours, you need to talk to the person who owns it. By adding an index, ANY index, you are making changes to the table. There are no such things as "temporary" indexes.

You might be able to pull the data into a temporary table and create an index on that, then drop the temp table when you're done. But that's the closest you'll come to a temporary index without making changes to the base table.