Are we there yet?
Picked up this from LiveJournal's Lisa.
Another gem from Jeremy Cole.
The Progress_rows number indicates progress within a given step of executing the query. For instance, if you run a SELECT with a GROUP BY that can’t be done using an index, you will see two cycles of Progress_rows: once with a State of “Copying to tmp table” and once with “Sending data".
One thing I like about the patch is getting an idea how far MySQL is in processing a query.