使用select distinct插入

Question

比方说,我有2个表t1和t2.

create table t1 
{
id int not null,
col1 int null,
col2 int null,
col3 int null
}

create table t2
{
id uniqueidentifier not null,
col1 int null,
col2 int null,
col3 int null
}

我想将下面的结果集插入表t2.

select distinct col1, col2, col3 from t1

如何使用查询实现此目的？我试过下面的声明,但我知道它在语法上是错误的.

insert into t2
select newid(), distinct col1, col2, col3 from t1

Answer 1

insert into t2
select newid(),a.*
from
(Select distinct col1, col2, col3 from t1) a