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update select联合语句
update T_YW_CKItemstockset itemname=t2.itemname,size=t2.size,unitname=t2.unitname from T_YW_CKItemInfo t2,T_YW_CKItemstock t1where t1.itemnum=t2.itemnum
常用SQL
标签:HERE unit sql upd from items size 语句 sele