sql 數據庫插入select into from 和 insert into select from

兩個數據庫在同一臺服務器上

create TABLE Table1
    (
        a varchar(10) PRIMARY KEY,
        b varchar(10),
        c varchar(10)
    ) 

    create TABLE Table2
    (
        a varchar(10) PRIMARY KEY,
        c varchar(10),
        d int,
    )
    GO
    --2.創建測試數據
    Insert into Table1 values('a','aa','90')
    Insert into Table1 values('b','bb','100')
    Insert into Table1 values('c','cc','80')
    Insert into Table1 values('d','dd',null)
    GO
    select * from Table1

    --3.INSERT INTO SELECT語句複製表數據
    Insert into Country.dbo.Table2(a, c, d) select a,c,1 from Galaxy2012.dbo.Table1
    GO

    --4.顯示更新後的結果
    select * from Table2
    GO
    --5.刪除測試表
    drop TABLE Table1
    drop TABLE Table2

兩個數據庫不在同一個服務器上

exec sp_configure 'show advanced options',1
reconfigure
exec sp_configure 'Ad Hoc Distributed Queries',1
reconfigure
--當前數據庫中不存在AddressMain時用
select * into AddressMain from openrowset('SQLOLEDB' 
, '服務器名稱'; '用戶名'; '密碼' 
,數據庫名.dbo.AddressMain)

--當前數據庫中存在AddressMain時用
delete from AddressMain
insert into AddressMain select * from openrowset('SQLOLEDB' 
, '服務器名稱'; '用戶名'; '密碼'  
,數據庫名.dbo.AddressMain)SELECT *FROM OPENDATASOURCE( 'SQLOLEDB', 'Data Source=服務器名;User ID=用戶名;Password=密碼' ).數據庫名.dbo.AddressMainexec sp_configure 'Ad Hoc Distributed Queries',0reconfigureexec sp_configure 'show advanced options',0reconfigure


select into from：當目標數據庫中還不存在要插入數據的表
insert into select from ：當目標數據庫中要插入數據的表已經存在