Distinct를 사용하면 중복 값이 ​​반환됩니다.이를 방지하려면 어떻게해야합니까?

Question

검색어 :

select distinct (Customer) ,CustomerID from history where Customer != '' and  Customer LIKE 'Ram%'; 

결과 : MAX 및 group by를 사용하여

 Ramer ram100 
     Raman ra45 
     Raman ra45 

Answer 1

시도. 당신은뿐만 아니라 모든 고객 ID를보고 싶다면

select Customer, MAX(CustomerID) CustomerID 
from history 
where Customer != '' AND Customer LIKE 'Ram%' 
GROUP BY Customer 

Answer 2

, group_concat

select customer, group_concat(distinct customerid) 
from history 
where Customer != '' and Customer like 'Ram%' 
group by customer