On Tuesday, December 13, 2016, <
digoal@126.com> wrote:
The following bug has been logged on the website:
Bug reference: 14465
Logged by: Zhou Digoal
Email address: digoal@126.com
PostgreSQL version: 9.6.1
Operating system: CentOS 6.x x64
Description:
HI,
when i write a plpgsql return refcursor.
the refcursor is a ```insert into .. select .. from .. returning *;```
query.
but when i use auto_explain DEBUG it, i found the fetch after insert end,
not stream , insert and fetch the same time coordinat.
can PostgreSQL improve it?
This isn't a bug.
Opening a cursor causes it to execute, which in this case means performing the insert. You can only return opened cursors from a function. The act of fetching from the cursor simply gives access to the underlying rows.
Not sure what improvement you are wanting here but a posting to -general would be more appropriate. Describing your use case would help others understand why this might be useful.
David J.
