插入后如何 return WITH 子句中的另一个值

Question

我尝试使用 With 子句插入另一个 table。我可以 return 来自最终查询的 id，但主要目标是获取适配器的名称。

With AdapterName as (Select CONCAT('s', LTRIM(name, 's')::integer+1) as new_name
                     From adapter
                     Where adapter.name LIKE 's%'
                     Order by id desc
                     Limit 1),
     AdapterIns as (INSERT INTO adapter (create_date,name,tag) SELECT now(),new_name, new_name From AdapterName RETURNING id,name)
INSERT INTO user_adapter (create_date, user_id, adapter_id)
Select now(), 1, AdapterIns.id
From AdapterIns
RETURNING adapter_id;

我怎样才能returnAdapterIns.name作为最终结果？

谢谢，

更新：我也尝试加入 adapter_id 与原始 table 但最新的 INSERT 出现以下错误：

[42601] ERROR: syntax error at or near "INSERT"

Select adapter.name
From adapter
        Join (With AdapterName as (Select CONCAT('s', LTRIM(name, 's')::integer+1) as new_name
                                          From adapter
                                          Where adapter.name LIKE 's%'
                                          Order by id desc
                                          Limit 1),
                          AdapterIns as (INSERT INTO adapter (create_date,name,tag) SELECT now(),new_name, new_name From AdapterName RETURNING id)
                     INSERT INTO user_adapter (create_date, user_id, adapter_id)
                     Select now(), 1, AdapterIns.id
                     From AdapterIns
                         RETURNING adapter_id) temp on adapter.id = temp.adapter_id;

Answer 1

你不能。 Postgres 只允许您 return 插入的列。

可以用returning *再加入回原来的table得到名字

Answer 2

也将第二个插入语句塑造为 CTE（我在下面称之为 original_insert）然后选择将有所帮助。

With AdapterName as (Select CONCAT('s', LTRIM(name, 's')::integer+1) as new_name
                     From adapter
                     Where adapter.name LIKE 's%'
                     Order by id desc
                     Limit 1),
      AdapterIns as (INSERT INTO adapter (create_date,name,tag) SELECT now(),new_name, new_name From AdapterName RETURNING id,name),
 original_insert as (
                     INSERT INTO user_adapter (create_date, user_id, adapter_id)
                     Select now(), 1, AdapterIns.id
                     From AdapterIns
                     RETURNING adapter_id
                    )
SELECT oi.adapter_id, ai.name 
FROM original_insert oi JOIN AdapterIns ai ON oi.adapter_id = ai.id;

插入后如何 return WITH 子句中的另一个值

How to return another value from WITH clause after Inserting

sql

postgresql

postgresql-9.3