場景:
ide
根據運營需求,譬如咱們 規定 在 某2天內,凡是消費的客戶給予 消費金額的10%做爲積分獎勵,it
以最大的一天爲準,不累加 。class
update users_score a INNER JOIN (select max(paymoney) as mp,user_name from users_buy group by user_name ) b on a.user_name=b.user_name date
set a.user_score= a.user_score+(b.mp*0.1)select