Re: Server postgres_fdw "fetch_size" option cannot be updated
| От | Jeff Janes |
|---|---|
| Тема | Re: Server postgres_fdw "fetch_size" option cannot be updated |
| Дата | |
| Msg-id | CAMkU=1wDtOesTnk0VWSbB6=st2N+HpS6XvcBw9PX+M8tqj2=gg@mail.gmail.com обсуждение исходный текст |
| Ответ на | Server postgres_fdw "fetch_size" option cannot be updated (Logan Owen <pgsql@s1devops.com>) |
| Ответы |
Re: Server postgres_fdw "fetch_size" option cannot be updated
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| Список | pgsql-bugs |
On Thu, Dec 28, 2017 at 12:33 PM, Logan Owen <pgsql@s1devops.com> wrote:
Cheers,
Hi everyone,
I'm playing around with postgres_fdw (version 1.0), and ran into an issue where I wanted to update the "fetch_size" option on the server level:
sql> CREATE SERVER test_remote FOREIGN DATA WRAPPER postgres_fdw OPTIONS (host 'postgres2', dbname 'test', updatable 'false')
[2017-12-28 10:30:13] completed in 35ms
sql> ALTER SERVER test_remote OPTIONS (set fetch_size '50')
[2017-12-28 10:30:26] [42704] ERROR: option "fetch_size" not found
However, I am able to properly set the "fetch_size" when originally defining the server:
sql> CREATE SERVER test_remote2 FOREIGN DATA WRAPPER postgres_fdw OPTIONS (host 'postgres2', dbname 'test', updatable 'false', fetch_size '50')
[2017-12-28 10:31:26] completed in 24ms
You use 'set' only if a value already exists and you wish to change it. Since no value exists (the default does not count), you just do
ALTER SERVER test_remote OPTIONS (fetch_size '50');
Yes, this is confusing. But it is also documented, and I think it is required by the SQL/MED standard.
Jeff
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