pgconf.dev is coming up soon. I won't be able to make it to Montreal, but I saw that Dave Cramer posted on twitter asking about postgres protocol topics.
while I don't have a patch, I wanted to send an email about something: it'd be great to have a place - perhaps like application_name - for arbitrary labels; and we need protocol support to pass those labels inline with the query instead of having to require a separate round trip. it would also be good if these labels were somehow accessible in logging formats. observability frameworks like OpenTelemetry support tracing through all layers of a stack, and trace_ids can even be passed into sql with extensions like sqlcommenter. however sqlcommenter puts the trace_id into a comment which effectively breaks all the utility of pg_stat_statements since each query has a unique trace_id. if protocol enhancements are on the table, I think it would be great for this topic to get a little discussion. -Jeremy
