-- Add my_tischtennis_history_player_id column
ALTER TABLE member
ADD COLUMN my_tischtennis_history_player_id VARCHAR(255) NULL COMMENT 'TTR history player ID from myTischtennis (e.g. P14EC4981D)';

CREATE INDEX idx_member_my_tischtennis_history_player_id ON member(my_tischtennis_history_player_id);
