On Thu, Aug 21, 2025 at 11:13:44AM +0900, Fujii Masao wrote:
> On Thu, Aug 21, 2025 at 4:19 AM Nathan Bossart <nathandboss...@gmail.com> 
> wrote:
>> Nice find.  I would suggest adding the virtual generated column to
>> regression_vacuumdb_test when it is first created so that we can just rely
>> on the existing test cases.  In fact, by doing so, you'll see that we need
>> a similar change to the "inheritance and regular stats" part of the query.
> 
> +1

Since we're running out of time for v18, I went ahead and updated the
patch.  I've also added an open item for this.

-- 
nathan
>From d6edeada7f0670eb18717ee7df5841bd80c927b4 Mon Sep 17 00:00:00 2001
From: Nathan Bossart <nat...@postgresql.org>
Date: Thu, 21 Aug 2025 08:45:50 -0500
Subject: [PATCH v4 1/1] vacuumdb: Fix --missing-stats-only with virtual
 generated columns.

Author: Yugo Nagata <nag...@sraoss.co.jp>
Reviewed-by: Fujii Masao <masao.fu...@gmail.com>
Discussion: 
https://postgr.es/m/20250820104226.8ba51e43164cd590b863ce41%40sraoss.co.jp
---
 src/bin/scripts/t/100_vacuumdb.pl | 7 ++++---
 src/bin/scripts/vacuumdb.c        | 5 +++++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/bin/scripts/t/100_vacuumdb.pl 
b/src/bin/scripts/t/100_vacuumdb.pl
index 240f0fdd3e5..945c30df156 100644
--- a/src/bin/scripts/t/100_vacuumdb.pl
+++ b/src/bin/scripts/t/100_vacuumdb.pl
@@ -237,9 +237,10 @@ $node->command_fails_like(
        qr/cannot vacuum all databases and a specific one at the same time/,
        'cannot use option --all and a dbname as argument at the same time');
 
-$node->safe_psql('postgres',
-       'CREATE TABLE regression_vacuumdb_test AS select generate_series(1, 10) 
a, generate_series(2, 11) b;'
-);
+$node->safe_psql('postgres', q|
+  CREATE TABLE regression_vacuumdb_test AS select generate_series(1, 10) a, 
generate_series(2, 11) b;
+  ALTER TABLE regression_vacuumdb_test ADD COLUMN c INT GENERATED ALWAYS AS (a 
+ b);
+|);
 $node->issues_sql_like(
        [
                'vacuumdb', '--analyze-only',
diff --git a/src/bin/scripts/vacuumdb.c b/src/bin/scripts/vacuumdb.c
index 22093e50aa5..fd236087e90 100644
--- a/src/bin/scripts/vacuumdb.c
+++ b/src/bin/scripts/vacuumdb.c
@@ -14,6 +14,7 @@
 
 #include <limits.h>
 
+#include "catalog/pg_attribute_d.h"
 #include "catalog/pg_class_d.h"
 #include "common.h"
 #include "common/connect.h"
@@ -973,6 +974,8 @@ retrieve_objects(PGconn *conn, vacuumingOptions *vacopts,
                                                         " AND a.attnum 
OPERATOR(pg_catalog.>) 0::pg_catalog.int2\n"
                                                         " AND NOT 
a.attisdropped\n"
                                                         " AND a.attstattarget 
IS DISTINCT FROM 0::pg_catalog.int2\n"
+                                                        " AND a.attgenerated 
OPERATOR(pg_catalog.<>) "
+                                                        
CppAsString2(ATTRIBUTE_GENERATED_VIRTUAL) "\n"
                                                         " AND NOT EXISTS 
(SELECT NULL FROM pg_catalog.pg_statistic s\n"
                                                         " WHERE s.starelid 
OPERATOR(pg_catalog.=) a.attrelid\n"
                                                         " AND s.staattnum 
OPERATOR(pg_catalog.=) a.attnum\n"
@@ -1010,6 +1013,8 @@ retrieve_objects(PGconn *conn, vacuumingOptions *vacopts,
                                                         " AND a.attnum 
OPERATOR(pg_catalog.>) 0::pg_catalog.int2\n"
                                                         " AND NOT 
a.attisdropped\n"
                                                         " AND a.attstattarget 
IS DISTINCT FROM 0::pg_catalog.int2\n"
+                                                        " AND a.attgenerated 
OPERATOR(pg_catalog.<>) "
+                                                        
CppAsString2(ATTRIBUTE_GENERATED_VIRTUAL) "\n"
                                                         " AND 
c.relhassubclass\n"
                                                         " AND NOT 
p.inherited\n"
                                                         " AND EXISTS (SELECT 
NULL FROM pg_catalog.pg_inherits h\n"
-- 
2.39.5 (Apple Git-154)

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