Re: Column Filtering in Logical Replication

On Mon, Jan 3, 2022 at 8:01 PM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
>

fetch_remote_table_info()
{
..
+ appendStringInfo(&cmd,
+ "  SELECT pg_catalog.unnest(prattrs)\n"
+ "    FROM pg_catalog.pg_publication p JOIN\n"
+ "         pg_catalog.pg_publication_rel pr ON (p.oid = pr.prpubid)\n"
+ "   WHERE p.pubname IN (%s) AND\n",
+ publications.data);
+ if (!am_partition)
+ appendStringInfo(&cmd, "prrelid = %u", lrel->remoteid);
+ else
+ appendStringInfo(&cmd,
+ "prrelid IN (SELECT relid\n"
+ "    FROM pg_catalog.pg_partition_tree(pg_catalog.pg_partition_root(%u)))",
+ lrel->remoteid);

IIUC, this doesn't deal with cases when some publication has not
specified table attrs. In those cases, I think it should return all
attrs? Also, it is not very clear to me what exactly we want to do
with partitions?

-- 
With Regards,
Amit Kapila.