
SQL 用一个表的数据更新另一张表
用表B的数据(B1列,B2)更新表A的A1,A2列 SQL Server: update A SET A.A1 = b.B1,A.A2=B.A2 FROM A ,B WHERE A.ID1 = B.ID1 and A.ID2 = B.ID2...
用表B的数据(B1列,B2)更新表A的A1,A2列 SQL Server: update A SET A.A1 = b.B1,A.A2=B.A2 FROM A ,B WHERE A.ID1 = B.ID1 and A.ID2 = B.ID2...