报错-Every derived table must have its own alias

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mysql问题：报错-Every derived table must have its own alias

这种错误一般出现在sql的多表查询或嵌套查询中。意思是，每一个派生出来的表（临时表）都必须有自己的别名。

所有解决方法就是嵌套查询中，出现的派生表必须加上别名，例如 as a

select  a.sid, a.sname, a.gender, a.phone, a.birthday, a.hobby, a.info 
#这里的派生表就要加上别名   as a
from (select sid, sname, gender, phone, birthday, hobby, info from stu where 1=1) as a 
limit ? offset ?