Hi,
On 2019-10-07 17:00:24 +0900, Tatsuo Ishii wrote:
> According to the manualof RowDescription message
> https://www.postgresql.org/docs/12/protocol-message-formats.html
>
> Specifies the number of fields in a row (can be zero).
>
> Does 0 fields could actually happen?
Yes, e.g.:
SELECT;