Yes! The Problem is solved. It seems to be the only way.

Thank you very much! 🙂

The Database is in simple recovery mode.

The .csv files contain only data like this:

id|identifier|order|activity

1|Not set|1|\N

2|Business Unit|2.0010|1

3|Rent|2.0020|2

4|Trade|2.0040|4

'\N' is NULL.

DDL-Commands are in seperate .sql files like this:

DROP TABLE IF EXISTS `activities`;

/*!40101 SET @saved_cs_client =...