The problem is that each record entry from your csv file must be
associated with the correct entry from the database, so it would require
some knowledge of programming to build a program or some sql queries to
complete the process. Maybe this is the reason why you get such vague
answers.
There is no tool that allows you to simply load a csv file,
hit a button and get the work done. Possibly i will make one in the near
future, but again, there are many things that can vary from one file to
another, like how the columns are named, how the timings are added, etc.
So a universal tool is pretty difficult to do.