Sql 插入动态值

Question

我在 postgres 数据库上使用以下查询：

insert into user_settings (google_access_token, google_refresh_token) 
   select 'google_access_token', 'google_refresh_token' from user 
   where id = user_id

table user_settings 有一个字段 user_id 对应于用户 table 中名为 id 的字段。但这给出了错误：

column "user_id" does not exist 
Hint: There is a column named "user_id" in table "user_settings", 
but it cannot be referenced from this part of the query

Answer 1

我猜你需要这样做:

   insert into user_settings (google_access_token, google_refresh_token) 
   select 'google_access_token', 
          'google_refresh_token' 
   from user 
   where id in (select user_id from user_settings )

Answer 2

您正在使用 user_settings 中的一列并插入到 table 中并带有条件。我认为你必须使用更新语句，因为你的条件是

用户 .id = user_settings .user_id

Answer 3

即使没有匹配值，您也可以更新 table 不带 NULL 值

update user_settings
set 
user_settings.google_access_token='google_access_token',
user_settings.google_refresh_token='google_refresh_token'
from user_settings
inner join user 
on user_settings.user_id=user.id

Sql 插入动态值

Sql Insert with dynamic values

sql

postgresql