Sql 在oracle中复制一行并插入到同一个表中

我有一个名为gen的表，其结构如下；gen01是主键

gen01    gen02   gen03
    A        2       5
    B        7       9
    C        3      11

我想复制一行并插入到表中。所以我写了一个SQL

insert into gen (gen01, gen02, gen03) 
values 
(D, select gen02, gen03 from gen where gen01 = A)

---

并且它报告缺少表达式的错误。原因是什么？Thx.

你可以试试这样的东西

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

---

你可以试试这样的

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

试试这个

insert into gen (gen01, gen02, gen03) 
select 'D', gen02, gen03 
from gen where gen01 = 'A';

试试这个

insert into gen (gen01, gen02, gen03) 
select 'D', gen02, gen03 
from gen where gen01 = 'A';

请使用下面的代码

CREATE TABLE gen(gen01 VARCHAR(100) PRIMARY KEY, gen02 INT, gen03 INT)

INSERT INTO gen(gen01,gen02,gen03)
VALUES('A',2,5),('C',3,11),('B',7,9)

insert into gen (gen01,gen02,gen03) 
select 'D' as gen01,gen02,gen03 from gen where gen01='A';

select * from gen;

请使用下面的代码

CREATE TABLE gen(gen01 VARCHAR(100) PRIMARY KEY, gen02 INT, gen03 INT)

INSERT INTO gen(gen01,gen02,gen03)
VALUES('A',2,5),('C',3,11),('B',7,9)

insert into gen (gen01,gen02,gen03) 
select 'D' as gen01,gen02,gen03 from gen where gen01='A';

select * from gen;