On 2023-07-14 14:19, David G. Johnston wrote:
> Because of the returning they all need a portal so far as the server is
> concerned and the server will obligingly send the contents of the
> portal
> back to the client.
Dave's pcap file, for the fetch count 0 case, does not show any
portal name used in the bind, describe, or execute messages, or
any portal close message issued by the client afterward. The server
may be using a portal in that case, but it seems more transparent
to the client when fetch count is zero.
Perhaps an easy rule would be, if the driver itself adds RETURNING
because of a RETURN_GENERATED_KEYS option, it should also force the
fetch count to zero and collect all the returned rows before
executeUpdate returns, and then it will have the right count
to return?
It seems that any approach leaving any of the rows unfetched at
the time executeUpdate returns might violate a caller's expectation
that the whole outcome is known by that point.
Regards,
-Chap