SQL错误：缺少右括号

Question

我想将下面的查询用作另一条语句中的子查询，但是当我将其括在括号中时，出现错误“缺少正确的括号”。

没有花括号，它执行得很好。

这里有什么问题？ 我需要将该语句括在括号内，以将其用作另一个语句的子查询。 我该怎么办？

(SELECT dname 
 FROM   student, 
        major 
 WHERE  student.sid = major.sid 
        AND year = 5 
 GROUP  BY year, 
          dname 
 HAVING Count(student.sid) > 5 
 ORDER  BY year) 

Answer 1

您不能对IN的子查询使用ORDER BY 。 因为从字面上看IN并不关心您指定值的顺序

 with temp as (select dname, count(sid) as majors
 from major 
 group by dname
 order by majors desc)
 select dname
 from temp
 where majors > 15 or dname in  (SELECT dname 
  FROM   student, 
        major 
  WHERE  student.sid = major.sid 
        AND year = 5 
  GROUP  BY year, 
          dname 
  HAVING Count(student.sid) > 5 ) 

Answer 2

 with   major as (
 select major.dname,major.sid from ( 
                 values ('d1',101), ('d1',102),
                  ('d1',103), ('d2',201), ('d2',202), ('d2',203)
                 ) as major(dname,sid)
),
student as 
(select sid,year from (
values (101,5),(102,5),(103,4),(104,3),(105,2),(106,1),(107,4)
) as student(sid,year)
),
temp as (   
   select major.dname, count(major.sid) as majors
 from     ( 
                 values ('d1',101), ('d1',102),
                  ('d1',103), ('d2',201), ('d2',202), ('d2',203)
                 ) as major(dname,sid)
 group by dname
 --order by majors desc
 --The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP, OFFSET or FOR XML is also specified.
 )
 select dname
 from temp
 where majors > 2 or dname in  (SELECT dname 
  FROM   student, 
        major 
  WHERE  student.sid = major.sid 
        AND year = 5 
  GROUP  BY year, 
          dname 
  HAVING Count(student.sid) > 5 ) 

输出量

dname
d1
d2