:: Remove all environmental variables that begin with ~
for /f "tokens=1* delims==" %%# in ('set ~') do @set %%#=

"C:\Program Files\MySQL\MySQL Server 8.0\bin\mysqld.exe" --defaults-file="C:\ProgramData\MySQL\MySQL Server 8.0\my.ini" MySQL

RENAME USER 'classicmodels_backup'%' TO 'classicmodels_backup'localhost';