-- CHAY SAU KHI TAI KHOAN HIEN CHAT DA DANG KY.
-- Thay 'TEN_DANG_NHAP_CUA_BAN' bang username cua tai khoan chu website.
INSERT INTO hc_admins(user_id, role)
SELECT id, 'superadmin' FROM users
WHERE username = 'TEN_DANG_NHAP_CUA_BAN'
ON DUPLICATE KEY UPDATE role='superadmin';