0001-Show-only-rows-that-open-connections-in-some-system-.patch

From aca42a2a3dc95fa2b4a1e6a1960d5cc834850034 Mon Sep 17 00:00:00 2001
From: Euler Taveira <euler@timbira.com.br>
Date: Mon, 4 Nov 2019 14:45:38 +0000
Subject: [PATCH] Show only rows that open connections in some system views

It is pointless to show auxiliary processes that do not open connections
to Postgres in pg_stat_ssl and pg_stat_gssapi. This change affects
compatibility with previous versions.
---
 src/backend/catalog/system_views.sql | 6 ++++--
 src/test/regress/expected/rules.out  | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index 9fe4a47..ce39808 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -826,7 +826,8 @@ CREATE VIEW pg_stat_ssl AS
             S.ssl_client_dn AS client_dn,
             S.ssl_client_serial AS client_serial,
             S.ssl_issuer_dn AS issuer_dn
-    FROM pg_stat_get_activity(NULL) AS S;
+    FROM pg_stat_get_activity(NULL) AS S
+	WHERE S.client_port IS NOT NULL;
 
 CREATE VIEW pg_stat_gssapi AS
     SELECT
@@ -834,7 +835,8 @@ CREATE VIEW pg_stat_gssapi AS
             S.gss_auth AS gss_authenticated,
             S.gss_princ AS principal,
             S.gss_enc AS encrypted
-    FROM pg_stat_get_activity(NULL) AS S;
+    FROM pg_stat_get_activity(NULL) AS S
+	WHERE S.client_port IS NOT NULL;
 
 CREATE VIEW pg_replication_slots AS
     SELECT
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 210e9cd..14e7214 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1845,7 +1845,8 @@ pg_stat_gssapi| SELECT s.pid,
     s.gss_auth AS gss_authenticated,
     s.gss_princ AS principal,
     s.gss_enc AS encrypted
-   FROM pg_stat_get_activity(NULL::integer) s(datid, pid, usesysid, application_name, state, query, wait_event_type, wait_event, xact_start, query_start, backend_start, state_change, client_addr, client_hostname, client_port, backend_xid, backend_xmin, backend_type, ssl, sslversion, sslcipher, sslbits, sslcompression, ssl_client_dn, ssl_client_serial, ssl_issuer_dn, gss_auth, gss_princ, gss_enc);
+   FROM pg_stat_get_activity(NULL::integer) s(datid, pid, usesysid, application_name, state, query, wait_event_type, wait_event, xact_start, query_start, backend_start, state_change, client_addr, client_hostname, client_port, backend_xid, backend_xmin, backend_type, ssl, sslversion, sslcipher, sslbits, sslcompression, ssl_client_dn, ssl_client_serial, ssl_issuer_dn, gss_auth, gss_princ, gss_enc)
+  WHERE (s.client_port IS NOT NULL);
 pg_stat_progress_cluster| SELECT s.pid,
     s.datid,
     d.datname,
@@ -1964,7 +1965,8 @@ pg_stat_ssl| SELECT s.pid,
     s.ssl_client_dn AS client_dn,
     s.ssl_client_serial AS client_serial,
     s.ssl_issuer_dn AS issuer_dn
-   FROM pg_stat_get_activity(NULL::integer) s(datid, pid, usesysid, application_name, state, query, wait_event_type, wait_event, xact_start, query_start, backend_start, state_change, client_addr, client_hostname, client_port, backend_xid, backend_xmin, backend_type, ssl, sslversion, sslcipher, sslbits, sslcompression, ssl_client_dn, ssl_client_serial, ssl_issuer_dn, gss_auth, gss_princ, gss_enc);
+   FROM pg_stat_get_activity(NULL::integer) s(datid, pid, usesysid, application_name, state, query, wait_event_type, wait_event, xact_start, query_start, backend_start, state_change, client_addr, client_hostname, client_port, backend_xid, backend_xmin, backend_type, ssl, sslversion, sslcipher, sslbits, sslcompression, ssl_client_dn, ssl_client_serial, ssl_issuer_dn, gss_auth, gss_princ, gss_enc)
+  WHERE (s.client_port IS NOT NULL);
 pg_stat_subscription| SELECT su.oid AS subid,
     su.subname,
     st.pid,
-- 
2.7.4