Add C comment about process_settings() setting order.

diff --git a/src/backend/utils/init/postinit.c b/src/backend/utils/init/postinit.c
index 97144f2717d3ed03837aa7b55fd23d55de950f0b..b2768d2400a6b6ced3588ed6e611e50af15380ea 100644 (file)
--- a/src/backend/utils/init/postinit.c
+++ b/src/backend/utils/init/postinit.c
@@ -855,6 +855,7 @@ process_settings(Oid databaseid, Oid roleid)
 
    relsetting = heap_open(DbRoleSettingRelationId, AccessShareLock);
 
+   /* Later settings are ignored if set earlier. */
    ApplySetting(databaseid, roleid, relsetting, PGC_S_DATABASE_USER);
    ApplySetting(InvalidOid, roleid, relsetting, PGC_S_USER);
    ApplySetting(databaseid, InvalidOid, relsetting, PGC_S_DATABASE);