SQL ROW TO COLUMN

Question

У меня есть таблица, как следовать ОПЕРАЦИИ

OPERATOR-OPERATION TYPE 
Ahmet DELETE 
Ahmet UPDATE 
Ahmet READ 
Salih DELETE 
Salih UPDATE 
Salih READ 
Salih READ 
Salih CREATE 

Что SQL будет получить следующий результат? Когда в простых предложениях COUNT, GROUP BY используются типы операций, написанных как основанные на ROW.

Name- Total- DELETE- READ- UPDATE CREATE 
Ahmet 3  1  1  1  0 
Salih 5  1  2  1  1 

Answer 1

select operator, 
     count(*) as total, 
     sum(case when operation_type = 'DELETE' then 1 else 0 end) as deletes, 
     sum(case when operation_type = 'UPDATE' then 1 else 0 end) as updates, 
     sum(case when operation_type = 'READ' then 1 else 0 end) as reads, 
     sum(case when operation_type = 'CREATE' then 1 else 0 end) as creates 
from operations 
group by operator