How to delete char from selectchar.

Hello, I have one question, i need help with selectchar. I want to delete all char from selectchar becuase design. How? I don't have idea, please help ^^ Thank you :)

Database -> Player -> clear Player & Player_Index

do you have more tables to truncate!

truncate the tables:

change_empire
guild/guild_comment/guild_grade/guild_member/guild_war/guild_war_reservation
highscore
horse_name
Messenger_list
Monarch/Monarch_election/Monarch_candidacy
Lotto_list
marriage
item
Player/Player_deleded/Player_index
safebox