i have a big table with over 5 million rows.. one column is a text column and is not indexed.. But i accidentally clicked the column heading and now it's spending forever trying to do that sort.
My mistake of course, but there is no way to cancel this. The STOP button does nothing, and if i force HeidiSql to terminate it remember that sort option and immediately tries it again as soon as i select the Data tab.
Eventually it sorts itself out of course ... but it would be nice to be able to terminate it.