SQL对值取整而且忽略小数点

(select cast(round(sum(port1.market/1000*secr1.moody_rating_no)/ (select sum(port2.market/1000) from TblHNWPort port2,TblHNWSecr secr2 where port2.cusip = secr2.cusip and port2.key_date = secr2.key_da
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