"INSERT ON CONFLICT DO NOTHING RETURNING" returns 类型的查询无

Question

"returning"语句returns0行，但我想要的是因为冲突无法插入的行。我在那里缺少什么？

详细信息：table users_strategies 获得了主键（id_strategy，id_account）

xsignalsbot=# select * from users_strategies;
 id | id_strategy | id_account | risk | active
----+-------------+------------+------+--------
  1 |           1 |         48 | 0.50 | t
  2 |           2 |         48 | 0.25 | f
(2 rows)

xsignalsbot=# insert into users_strategies (id_strategy,id_account) 
                 values (1,48) on conflict (id_strategy,id_account) do nothing
                    returning active,risk;
 active | risk
--------+------
(0 rows)

Answer 1

DO NOTHING不适用于RETURNING:

The optional RETURNING clause causes INSERT to compute and return value(s) based on each row actually inserted (or updated, if an ON CONFLICT DO UPDATE clause was used).

reference

Answer 2

将 DO NOTHING 更改为 UPDATE SET 语句（不修改最终结果）给出了想要的结果：

xsignalsbot=# insert into users_strategies (id_strategy,id_account) 
                 values (1,48) on conflict (id_strategy,id_account) do update set
                   id_strategy=excluded.id_strategy returning users_strategies.active, users_strategies.risk;

 active | risk
--------+------
 t      | 0.50
(1 row)

"INSERT ON CONFLICT DO NOTHING RETURNING" returns 类型的查询无

query of type "INSERT ON CONFLICT DO NOTHING RETURNING" returns nothing

postgresql

upsert

"INSERT ON CONFLICT DO NOTHING RETURNING" returns 类型的查询 无

query of type "INSERT ON CONFLICT DO NOTHING RETURNING" returns nothing

postgresql

upsert

"INSERT ON CONFLICT DO NOTHING RETURNING" returns 类型的查询无