是否可以在 Postgres 的 CTE 语句中多次二次使用返回值？

我想在一个 CTE 中插入主表后，将外键插入到多个表中。我找不到解决方案，所以这很可能是不可能的......

看这个例子：

CREATE TABLE test_main (main_id serial NOT NULL, main_name character varying(64) default null);
CREATE TABLE test_sub_one (sub_one_id serial NOT NULL,sub_one_main_id integer NOT NULL,sub_one_name character varying(64) default null);
CREATE TABLE test_sub_two (sub_two_id serial NOT NULL,sub_two_main_id integer NOT NULL,sub_two_name character varying(64) default null);

WITH main as (
    INSERT INTO test_main (main_name) VALUES ('test1') RETURNING main_id
) 
INSERT INTO test_sub_one (sub_one_main_id,sub_one_name) SELECT main_id, 'testsub1' FROM main,
INSERT INTO test_sub_two (sub_two_main_id,sub_two_name) SELECT main_id, 'testsub2' FROM main;

对第二个插入使用另一个 CTE：

WITH main as (
    INSERT INTO test_main (main_name) VALUES ('test1') RETURNING main_id
), sub1 as (
  INSERT INTO test_sub_one (sub_one_main_id,sub_one_name) 
  SELECT main_id, 'testsub1' FROM main
)
INSERT INTO test_sub_two (sub_two_main_id,sub_two_name) 
SELECT main_id, 'testsub2' FROM main;