select a.id, a.name, a.code, a.status, a.company_id,a.category_id,a.deadline,a.limit_time,a.limited,a.single_num,a.single_score,a.single_bank_id,
a.single_method,a.multi_num,a.multi_score,
a.multi_bank_id,a.multi_method,a.judge_num,a.judge_score,a.judge_bank_id,a.judge_method,a.pass_score,
a.easy_num,a.easy_score,a.easy_bank_id,a.easy_method,
a.version, a.create_by, a.create_time, a.update_by, a.update_time, a.remark,b.name as company_name,c.name as category_name
from ex_exam_paper a
left join sys_company b on b.id=a.company_id
left join sys_category c on c.id=a.category_id
update ex_exam_paper set del_flag=1 where id=#{paperId}