sql的union使用问题
麻烦大虾看一下代码，，运行union 报错是怎么回事啊
insert into caogen(id,no,tittle,author,contents)
select top 158 * from _TangSi
where Author not in( select Author from huangjia)and Author<>'无名氏' order by NEWID()
union
select * from _TangSi where Author='无名氏'
[解决办法]
分成两句... 要不你说说报错是啥吧。
[解决办法]
order by NEWID() 不能加order by 改下就可以了

insert into caogen(id,no,tittle,author,contents)
select * from  （select top 158 * from _TangSi 
where Author not in( select Author  from huangjia)and Author<>'无名氏' order by NEWID() ） a
union  
select * from _TangSi where Author='无名氏'

[解决办法]
应该是楼上说的那样，使用union时，不能带有order by
insert into caogen(id,no,tittle,author,contents)
select top 158 * from _TangSi
where Author not in( select Author from huangjia)and Author<>'无名氏'
union
select * from _TangSi where Author='无名氏'

[解决办法]

insert into caogen(id,no,tittle,author,contents)
 select * from （select top 158 * from _TangSi 
 where Author not in( select Author  from huangjia)and Author<>'无名氏' union  
 select * from _TangSi where Author='无名氏'）as t order by NEWID() 

[解决办法]

with cte
as
(
select top 158 * from _TangSi 
where Author not in( select Author  from huangjia)and Author<>'无名氏' order by NEWID() 
)

insert into caogen(id,no,tittle,author,contents)
select * from cte
union  
select * from _TangSi where Author='无名氏' 

union 连接查询中不能使用order by 语句，必须是类似上楼的

select * from （select top 158 * from _TangSi 
 where Author not in( select Author  from huangjia)and Author<>'无名氏' union  
 select * from _TangSi where Author='无名氏'）as t order by NEWID() 

最后使用order by。
或者使用cte 语句定义也可以，参考我的sql语句
[解决办法]

引用:

with cte
as 
 
(
select top 158 * from _TangSi 
where Author not in( select Author  from huangjia)and Author<>'无名氏' order by NEWID() 
)

insert into caogen(id,no,tittle,author,contents)
select * from cte
union  
select * from _TangSi where Author='无名氏' 

union 连接查询中不能使用order by 语句，必须是类似上楼的

select * from （select top 158 * from _TangSi 
 where Author not in( select Author  from huangjia)and Author<>'无名氏' union  
 select * from _TangSi where Author='无名氏'）as t order by NEWID() 

最后使用order by。
或者使用cte 语句定义也可以，参考我的sql语句

在使用 UNION、EXCEPT 或 INTERSECT 运算符的查询中，只允许在语句末尾使用 ORDER BY。 只有在顶级查询而不是子查询中指定了 UNION、EXCEPT 和 INTERSECT 时，此限制才适用。