| SELECT char_length(CONVERT (user_name USING UTF8MB4)) char_length, count(*)... |
3 years ago |
| SELECT char_length(CONVERT (user_name USING UTF8)) char_length, count(*)... |
3 years ago |
| SELECT length(user_name) as len_user_name, char_length(user_name),... |
3 years ago |
