PostgreSql INSERT FROM SELECT RETURNING ID

Question

在PostgreSql 9.2.4中，我有两个表：user (id, login, password, name)和dealer (id, user_id)。

我想插入两个表中返回创建的经销商的ID。

目前我有两个疑问做：

WITH rows AS (
    INSERT INTO "user" 
     (login, password, name) 
    VALUES 
     ('dealer1', 'jygbjybk', 'Dealer 1') 
    RETURNING id 
) 
INSERT INTO dealer (user_id) 
    SELECT id 
    FROM rows; 
SELECT currval('dealer_id_seq'); 

但我可以使用RETURNING声明单INSERT查询实现这一点？

Answer 1

你只需要添加一个RETURNING id您INSERT ... SELECT：

WITH rows AS (...) 
INSERT INTO dealer (user_id) 
    SELECT id 
    FROM rows 
    RETURNING id; 

演示：http://sqlfiddle.com/#!12/75008/1