select ID, USER_ID, PWDSTRATEGY_ID from PL_SYS_USER_PWDSTRATEGY where ID = #{id} select count(1) from PL_SYS_USER_PWDSTRATEGY and ID = #{id} and USER_ID = #{userId} and PWDSTRATEGY_ID = #{pwdstrategyId} update PL_SYS_USER_PWDSTRATEGY USER_ID = #{userId}, PWDSTRATEGY_ID = #{pwdstrategyId}, where ID = #{id} delete from PL_SYS_USER_PWDSTRATEGY where ID = #{id}