将字段*1或者+0可以将字符串字段按数值排序
如:
select * from table where 1 order by id*1 desc;
或者
select * from table where 1 order by id+0 desc;
ps:求最大值亦然
将字段*1或者+0可以将字符串字段按数值排序
如:
select * from table where 1 order by id*1 desc;
或者
select * from table where 1 order by id+0 desc;
ps:求最大值亦然