Oracle) Insert multiple rows with one fixed value

问题

I'd like to insert these values in the following fashion:

insert into table (name, action-id) values ('user', select action from actions where name='user2');

The result being:

Inserts along the line of, ('user', 1) ('user', 2) ('user', 3)

I'm noticing this isn't correct sql. How would I go about accomplishing this?

note)

select action from actions where name='user2'

would return: (1, 2, 3)

回答1:

You can do it with a loop:

BEGIN 

    FOR x IN (select action from actions where name='user2') LOOP

         insert into table (name, action-id) values ('user', x.action)

    END LOOP;
END;

or you could use the INSERT/SELECT syntax:

INSERT INTO table (name, action-id)
  SELECT 'user', action
  FROM actions WHERE name='user2';

回答2:

Add the fixed value as a column in your query, and use insert-select instead of insert-values:

insert into table (name, action-id)
select 'user', action from actions where name='user2';

回答3:

Or can be done by procedure 
Create that procedure and run it
create or replace procedure set_action

as
cursor c1 is
select * from user;
person c1%rowtype;
username varchar(8);
begin
username:='user';
for person in c1 loop
insert into table(name,action-id)
values (username,person.action);
end loop;
end;
It can be run by execute set_action;

回答4:

Example:

create table testing(col1 varchar2(10), col2 varchar2(10));
create table testing2(col1 varchar2(10), col2 varchar2(10));
create table testing3(col1 varchar2(10), col2 int);
insert into testing2 (col1, col2) values ('test2_col1', 'test2_col2');
insert into testing3(col1, col2) values ('steve', 1);
insert into testing3(col1, col2) values ('brad', 2);
insert into testing3(col1, col2) values ('chad', 3);
insert into testing3(col1, col2) values ('nick', 1);
insert into testing(col1, col2)
  (select col1 ,(select col2 from testing2) from testing3); -- inserts 4 rows

And finally:
select * from testing; steve test2_col2 brad test2_col2 chad test2_col2 nick test2_col2

来源：https://stackoverflow.com/questions/26164455/oracle-insert-multiple-rows-with-one-fixed-value

标签

sql

Oracle