ORA - 00936 오류가 있지만 라인 2에서 누락 된 것을 찾을 수 없습니다.

Question

이 코드를 실행하려고하는데, 나는 전혀 이해할 수없는 row_number() 표현에서 뭔가를 놓치고 있다고 말합니다.

with summary as 
(select s.city, length(s.city) as C_length, 
row_number() over (partition by length(s.city), order by s.city) 
as r1 from station s 
where 
length(s.city) = (SELECT min(LENGTH(s1.CITY)) FROM STATION s1) 
or length(s.city) = (SELECT max(LENGTH(s2.CITY)) FROM STATION s2)) 
select su.city, su.C_length 
from summary su; 

Answer 1

는 partition by 절과 order by 절 사이에 쉼표가 안된다. 그냥 제거하고 확인해야합니다 :

row_number() over (partition by length(s.city) order by s.city) 
-- Comma removed here ------------------------^ 

Answer 2

귀하의 쿼리를 단순화 할 수 있습니다

with summary as (
     select s.city, length(s.city) as C_length, 
      min(length(s.city)) over() as min_length, 
      max(length(s.city)) over() as max_length, 
     from station s 
    ) 
select su.city, su.C_length 
from summary su 
where c_length in (min_length, max_length); 

내가 r1를 제거 사용하지 않을 때문이다.