How can I create this query?

[Chewbaca08]

Hello. I used Turkish characters in the media files of my Worpdress site but I am facing issues. How can I create the following query from MySQL to change all "ç" to "c", "ü" to "u", etc.? Sample illustrated guide: http://prntscr.com/bbuear MySQL name: xxx_newmysql Table name: xxx_postmeta Column name: meta_key Row name: _wp_attached_file