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name varchar(20) not null,
age int not null
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create table mother(
id int identity(1,1),
name varchar(20) not null,
age int not null,
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[Column]
public string Make;
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id int,
value varchar(10),
t_time datetime
)
insert test_1
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select 3,'c','2009-04-21' union
select 4,'d','2009-04-22' union
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