left join sys_user u on u.user_name = a.user_name
select a.id, a.user_name, case when u.status is null then a.user_name+'(登录账号不存在)' when u.status = '1' then u.nick_name+'(停用)' else u.nick_name end nick_name, a.sap_bm, a.sap_name, a.sap_area
from sap_account a
insert into sap_account
user_name,sap_bm,sap_name,sap_area,#{userName},#{sapBm},#{sapName},#{sapArea},
update sap_account
user_name = #{userName},sap_bm = #{sapBm},sap_name = #{sapName},sap_area = #{sapArea},
where id = #{id}
delete from sap_account where id = #{id}
delete from sap_account where id in
#{id}