Change userrating in KODI db using DB Browser?

Hi,

i don’t know much about SQL, but i’ve been able to edit my db using this guide and the replace function:
HOW-TO:Update_SQL_databases_when_files_move (wiki)

I now want to change every song with a userrating of 2 to a 0, to make them unrated.

How can i achieve that

Any nod to the right direction is appreciated.