With the help of dbForge Studio for MySQL I was finally able to export all my large Excel, CVS and Access data which I use for my selling reports to my MySQL Online Database without any losses.
dbForge Studio for MySQL is a VERY smart product which e.g. automatically detected and converted the right column type (datetime) from a CSV! Non of the other programs I tested was able to do the same. (PhpMyAdmin, HeidiSQL, Oracle Workbench all failed with corrupt data)
I strongly recommend this tool to everyone who needs to work with MySQL
More information: https://www.devart.com/de/dbforge/mysql/studio/