“Wielokrotna liczba w SQL” Kod odpowiedzi

Wielokrotna liczba w SQL

SELECT distributor_id,
    count(*) AS Total,
    sum(CASE WHEN inflevel = 'exec' THEN 1 ELSE 0 END) AS ExecCount,
    sum(CASE WHEN inflevel = 'personal' THEN 1 ELSE 0 END) AS PersonalCount
FROM yourtable
GROUP BY distributor_id