하위 쿼리에서 카운트 (*)하는 방법

Question

하위 쿼리를 사용하여 카운트 (*)를 작성하려면 어떻게해야합니까? (select * from Firms) == Firms되지

Msg 102, Level 15, State 1, Line 1 
Incorrect syntax near ')'. 

그러나 : 위의 두 줄에서

select count(*) from Firms 
select count(*) from (select * from Firms) 

, 상단 하나는 작동하지만 두 번째 줄에, 나는 오류가?

편집 : 이것에 대한 그러나 :

The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP or FOR XML is also specified. 

가 어떻게이 문제를 해결할 수 있습니다

select count(*) from 
    (
     select HireResponseID, HireResponse, DateResponse, Comments, YearFileOpened, file_number, isCaseOpen, last_update, isConfidential, date_created, OurClient, TheirClient, ProjectName, description, lawyer_lastname, lawyer_firstname, Conflicts.ConflictID 
     from Hire_Response, Conflicts, Lawyers 
     WHERE Hire_Response.ConflictID=Conflicts.ConflictID AND Lawyers.lawyerID=Conflicts.lawyerID AND firmID = @FirmID AND HireID = @HireID AND isStillaConflict = 1 
     ORDER BY file_number, TheirClient, OurClient, lawyer_lastname, lawyer_firstname 
    ) as data 

내가 오류가? 당신은 두 번째 버전에 별칭을 누락

Answer 1

는 :

select count(*) 
from 
(
    select * -- change this to the column names - you shouldn't use select * 
    from Firms 
) f -- this is missing 

SQL 서버는 모든 파생 된 테이블 및 하위 쿼리에 별칭을 필요로