SELECT id, username, password_hash, role, display_name, is_active, created_at FROM mall_account ORDER BY id ASC SELECT id, username, password_hash, role, display_name, is_active, created_at FROM mall_account WHERE id = #{id} INSERT INTO mall_account (username, password_hash, role, display_name, is_active) VALUES (#{username}, #{passwordHash}, #{role}, #{displayName}, #{active}) UPDATE mall_account SET role = #{role} WHERE id = #{id} UPDATE mall_account SET is_active = #{active} WHERE id = #{id} UPDATE mall_account SET password_hash = #{passwordHash} WHERE id = #{id} DELETE FROM mall_account WHERE id = #{id} SELECT COUNT(*) FROM mall_account WHERE role = 'ADMIN' AND is_active = TRUE SELECT COUNT(*) FROM mall_account WHERE username = #{username}