“Mehrere Zählungen mit der Klausel SQL” Code-Antworten

Mehrere Zählungen mit der Klausel SQL

SELECT distributor_id,
    count(*) AS total,
    sum(case when level = 'exec' then 1 else 0 end) AS ExecCount,
    sum(case when level = 'personal' then 1 else 0 end) AS PersonalCount
FROM yourtable
GROUP BY distributor_id