使用 INSERT ... SELECT:

insert into your_table (c1, c2, ...)
select c1, c2, ...
from your_table
where id = 1

其中 c1, c2, ... 是除 id 之外的所有列.如果您想显式插入 id 为 2，则将其包含在您的 INSERT 列列表和您的 SELECT 中:

where c1, c2, ... are all the columns except id. If you want to explicitly insert with an id of 2 then include that in your INSERT column list and your SELECT:

insert into your_table (id, c1, c2, ...)
select 2, c1, c2, ...
from your_table
where id = 1

当然，在第二种情况下，您必须处理可能重复的 id 2.

You'll have to take care of a possible duplicate id of 2 in the second case of course.