select mcm.link_id, mcm.career_id, mcm.major_id, mcm.sort, mcm.remarks, mcm.create_at, mcm.update_at, mcm.del_flag
,mac.major_name as majorName
from mall_career_major mcm
left join mall_major_class mac on mcm.major_id = mac.major_id
insert into mall_career_major
career_id,
major_id,
sort,
remarks,
create_at,
update_at,
del_flag,
#{careerId},
#{majorId},
#{sort},
#{remarks},
#{createAt},
#{updateAt},
#{delFlag},
update mall_career_major
career_id = #{careerId},
major_id = #{majorId},
sort = #{sort},
remarks = #{remarks},
create_at = #{createAt},
update_at = #{updateAt},
del_flag = #{delFlag},
where link_id = #{linkId}
delete from mall_career_major where link_id = #{linkId}
delete from mall_career_major where link_id in
#{linkId}