📅  最后修改于: 2022-03-11 15:05:08.104000             🧑  作者: Mango
case
when qty_1<='23' then price
when '23'>qty_1 && qty_2<='23' then price_2
when '23'>qty_2 && qty_3<='23' then price_3
when '23'>qty_3 then price_4
else 1
end