insert into tb_bed(
bno,
dormitory_id
)values(
#{bno},
#{dormitoryId}
)
delete from tb_bed where id = #{id}
delete from tb_bed where dormitory_id = #{dormitoryId}
update tb_bed set
bno=#{bno},
dormitory_id=#{dormitoryId}
where id = #{id}
update tb_bed set
bno = #{bno},
dormitory_id = #{dormitoryId}
where id = #{id}
and id = #{id}and bno = #{bno}and dormitory_id = #{dormitoryId}