PostgreSQL的：不能指在新的內部查詢規則中的

Question

這就是PostgreSQL: Inserting into a View made from two tables

一個跟進的問題，我已經改變了我的原則是這樣：

CREATE RULE Insert_Post AS ON INSERT TO abcd1234.Posts DO INSTEAD 
(
    WITH Temp AS 
    (
     INSERT INTO abcd1234.Ratable_Entity VALUES 
      (NEW.Id, NEW.User_Id, NEW.Publish_Date) 
      RETURNING Id 
    ) 
    INSERT INTO abcd1234.Post 
     (SELECT Id, NEW.Title, NEW.Content FROM Temp) 
); 

但是現在我gettint出現以下錯誤：

ERROR: cannot refer to NEW within WITH query 

有什麼辦法可以做到這一點嗎？我也試過RETURNING Id INTO temp_id沒有WITH，但得到了語法錯誤。

Answer 1

爲創建功能：

/* 
drop rule if exists ri_vt on vt; 
drop function if exists fn_ivt(text, text); 
drop view if exists vt; 
drop table if exists t2; 
drop table if exists t1; 
*/ 
create table t1(i serial, x text); 
create table t2(i serial, t1_i int, y text); 
insert into t1(x) values('foo'); 

create view vt as select t1.i, x, y from t1 left join t2 on (t1.i = t2.t1_i); 

create function fn_ivt(p_x text, p_y text) returns setof vt language sql as $$ 
    with ins_t1 as (insert into t1(x) values(p_x) returning *) 
    insert into t2(t1_i, y) select ins_t1.i, p_y from ins_t1 returning t1_i as i, p_x, p_y 
$$; 

create rule ri_vt as on insert to vt do instead select * from fn_ivt(new.x, new.y); 

insert into vt(x,y) values('a','b'),('c','d'); 
select * from vt; 

╔═══╤═════╤══════╗ 
║ i │ x │ y ║ 
╠═══╪═════╪══════╣ 
║ 1 │ foo │ ░░░░ ║ 
║ 2 │ a │ b ║ 
║ 3 │ c │ d ║ 
╚═══╧═════╧══════╝ 
(3 rows)