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drop table father;
create table father(
 id int identity(1,1) primary key,
 name varchar(20) not null,
 age int not null
  
)
drop table mother;
create table mother(
 id int identity(1,1),
 name varchar(20) not null,
 age int not null,
 husban ......

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create table test_1
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id int,
value varchar(10),
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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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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 ......
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