1将一个表的字段插入另一个表中 

--例句
insert into Region(RegionID,RegionName,RegionParentID, ElementID) select Region.RegionID ,Region.RegionName ,Region.RegionParentID,Region.ElementID from WaterManage.dbo.Region
--例句
insert into Element select *from WaterManage.dbo.Element where Element.LayerID=1