2017-03-12, 14:14
It doesn't delete anything it just compacts the database. All databases just get bigger and bigger overtime, because even if you delete records, they are just erased but database is not getting smaller - it would consume too much time/cpu. So after several months you end up with database that is i.e. 15Mb but there is only 2 Mb actual data in it. This just deletes all empty space. Doesn't have impact on speed or anything, just reclaims disk space....
