MySQL - 查找并修复错误的字符

I have a table in MySQL that contains people's names and now some people are putting in characters with accents. Whatever original character set/collation this database used, it could not handle characters with accents and characters. Characters such as 'é' turned into 'é', characters such as 'ü' turned into 'ü' in the front-end applications that connect to this database. The database has since been modified (as well as most front-end applications that needed it) so that these fields use a UTF8 encoding and collation. Most names with accents now render correctly.I have a table in MySQL that contains people's