I have a process that regularly queries pg_stat_activity for user connections. Today I noticed an error because sometimes client_addr is null for some user connections. pg_hba.conf only allows host connections. So client_addr should not be null according to [0]. pg_stat_activity is queried as superuser who should see client_addr for all connections, not just his own. This is on v12.14 on Windows Server (regular EnterpriseDB install). Is this a known issue or just an undocumented corner case? [0] https://www.postgresql.org/docs/12/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW -- Erik
