--更新
update A, B set A.mc = B.mc where A.bmbh = B.bmbh;
update IPMS_Expenditure SET E_ProjectNumber15 = d.Phd_ProjectNumber15 FROM IPMS_Expenditure AS e ,T_ProjectHisDoc AS d
WHERE d.Phd_ProjectNumber = e.E_ProjectNumber
--插入
INSERT INTO table1 (c1, c2, c3) (SELECT v1, v2, v3 FROM table2)