📅  最后修改于: 2022-03-11 15:04:53.991000             🧑  作者: Mango
select t2.szCustId
, t2.bAllowToCredit
, sum(t1.decCreditLimit) as decCreditLimit
from table1 t1
join table2 t2 on t1.szCustId = t2.szCustId
group by t2.szCustId
, t2.bAllowToCredit