Resolved Upgrade to 18.0.75 Integrity constraint violation: 1062 Duplicate entry 'localhost-database\_-user' for key 'PRIMARY':

[hschramm]

The script is generating the needed sql statements correctly to delete the doublicated entries without the escaping.

Then you are lucky. The script has a major flaw: it does not respect the "Host" field. So if a user adds ip adresses for limiting access to the database the script recognises these users as "duplicate" but this is wrong. So i had to write my own script for the problem to fix it.