Re: Allow logical replication to copy tables in binary format - Mailing list pgsql-hackers

On Tue, Mar 14, 2023 at 4:32 PM Melih Mutlu <m.melihmutlu@gmail.com> wrote:
>
> Attached v13.
>

I have a question related to the below test in the patch:

+# Setting binary to false should allow syncing
+$node_subscriber->safe_psql(
+    'postgres', qq(
+    ALTER SUBSCRIPTION tsub SET (binary = false);));
+
+# Ensure the COPY command is executed in text format on the publisher
+$node_publisher->wait_for_log(qr/LOG: ( [a-z0-9]+:)? COPY (.+)? TO STDOUT\n/);
+
+$node_subscriber->wait_for_subscription_sync($node_publisher, 'tsub');
+
+# Check the synced data on the subscriber
+$result = $node_subscriber->safe_psql('postgres', 'SELECT a FROM
test_mismatching_types ORDER BY a;');
+
+is( $result, '1
+2', 'check synced data on subscriber with binary = false');
+
+# Test syncing tables with different column order
+$node_publisher->safe_psql(
+    'postgres', qq(
+    CREATE TABLE public.test_col_order (
+        a bigint, b int
+    );
+    INSERT INTO public.test_col_order (a,b)
+        VALUES (1,2),(3,4);
+    ));

What purpose does this test serve w.r.t this patch? Before checking
the sync for different column orders, the patch has already changed
binary to false, so it doesn't seem to test the functionality of this
patch. Am, I missing something?

--
With Regards,
Amit Kapila.