mysql中给查询出的结果集添加自增序号
select (@i:=@i+1) i,emp.* from emp,(select @i:=0) it
使用举例:
set @n = 0;
select (@n := @n + 1) as usid ,id,company_id,department_code from sys_user;
使用举例:
set @n = 0;
select (@n := @n + 1) as usid ,id,company_id,department_code from sys_user;