SQL Update实现使用一个表的数据更新另一张表

• 表结构
• 功能
• SQL Serevr
• Access

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表结构

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功能

用表B的数据（mc列）更新表A的mc列

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SQL Server语句

update A SET A.mc = b.mc FROM A ,B WHERE  A.bmbh = B.bmbh and A.xmbh = B.xmbh;

Access语句

update A, B  set A.mc = B.mc where A.bmbh = B.bmbh and A.xmbh = B.xmbh;

或者

update A INNER JOIN B ON A.bmbh = B.bmbh AND A.xmbh = B.xmbh SET A.mc = B.mc;