Группировка с условием на всю группу | Group by Having
Версия 2.2 от Alexandr Fokin на 2020/09/10 13:54
https://stackoverflow.com/questions/32122777/group-by-having-at-least-one-of-each-item
select
person_id
FROM MyTable
GROUP BY person_id
HAVING 3 = (
MAX(CASE pet WHEN 'dog' THEN 1 ELSE 0 END)
+ MAX(CASE pet WHEN 'cat' THEN 1 ELSE 0 END)
+ MAX(CASE pet WHEN 'tiger ' THEN 1 ELSE 0 END)
)