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merge [target] t
using [source] s on t.id = s.id
when matched then update t.name = s.name, t.age = s.age -- use "rowset1"
when not matched then insert values(id,name,age) -- use "rowset2"
when source not matched then delete; -- use "rowset3"
MERGE dbo.table AS im --¶Ô±È±í
USING (SELECT * from dbo.table_MID with(nolock) ) AS src --Ô´
ON im.ProductID = src. ProductID
WHEN MATCHED THEN
UPDATE SET im.ProductID = src. ProductID
,im.BrandName=src.BrandName
,im.ProductName = src.ProductName
,im.ProductType=src.ProductType
,indate=getdate()
WHEN NOT MATCHED THEN
INSERT (ProductID,BrandName,Series,ModelNumber,ProductName,ProductType,Category,indate)
VALUES (src.ProductID,src.BrandName,src.Series,src.ModelNumber,src.ProductName,src.ProductType,src.Category,src.indate)
WHEN NOT MATCHED BY SOURCE then delete;


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       VARCHAR2»òCHAR —¡µDATE
       NUMBER —¡µVARCHAR ......

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SQL code
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create table test_1
(
id int,
value varchar(10),
t_time datetime
)
insert test_1
select 1,'a','2009-04-19' union
select 2,'b','2009-04-20' union
select 3,'c','2009-04-21' union
select 4,'d','2009-04-22' union
s ......
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