SQL錯誤：缺少右括號

Question

我想在另一個語句中使用下面的查詢作爲子查詢，但是當我把它括在圓括號中時，我得到錯誤「缺少右括號」。

沒有大括號，它執行得很好。

這裏有什麼問題嗎？我需要將括號內的語句用作另一個語句的子查詢。我該怎麼辦？

(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

你不能用裏面IN子查詢使用ORDER BY。因爲從字面上IN並不關心在您指定的值

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) 

輸出

dname 
d1 
d2