On 2019-Nov-04, Stephen Frost wrote:
> Based on what we claim in our docs, it does look like 'client_port IS
> NOT NULL' should work. I do think we might want to update the docs to
> make it a bit more explicit, what we say now is:
>
> TCP port number that the client is using for communication with this
> backend, or -1 if a Unix socket is used
>
> We don't explain there that NULL means the backend doesn't have an
> external connection even though plenty of those entries show up in every
> instance of PG. Perhaps we should add this:
>
> If this field is null, it indicates that this is an internal process
> such as autovacuum.
>
> Which is what we say for 'client_addr'.
Seems sensible. Done. Thanks
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Álvaro Herrera https://www.2ndQuadrant.com/
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