Add server settings view (#768)

pkg/statements/sql.go

@@ -47,6 +47,9 @@ var (
 	//go:embed sql/function.sql
 	Function string
 
+	//go:embed sql/settings.sql
+	Settings string
+
 	// Activity queries for specific PG versions
 	Activity = map[string]string{
 		"default": "SELECT * FROM pg_stat_activity WHERE datname = current_database()",

pkg/statements/sql/settings.sql

@@ -0,0 +1 @@
+SELECT * FROM pg_settings