Jeśli chcesz distinct
następnie
select distinct group_concat(lot order by lot)
from `mytable`
group by product
having group_concat(tag order by tag) = '101,102';
Jeśli chcesz distinct
następnie
select distinct group_concat(lot order by lot)
from `mytable`
group by product
having group_concat(tag order by tag) = '101,102';