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Fix a WARNING for data origin discrepancies.

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Previously, a WARNING was issued at the time of defining a subscription
with origin=NONE only when the publisher subscribed to the same table from
other publishers, indicating potential data origination from different
origins. However, the publisher can subscribe to the partition ancestors
or partition children of the table from other publishers, which could also
result in mixed-origin data inclusion. So, give a WARNING in those cases
as well.

Reported-by: Sergey Tatarintsev <s.tatarintsev@postgrespro.ru>
Author: Hou Zhijie <houzj.fnst@fujitsu.com>
Author: Shlok Kyal <shlok.kyal.oss@gmail.com>
Reviewed-by: Vignesh C <vignesh21@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Backpatch-through: 16, where it was introduced
Discussion: https://postgr.es/m/5eda6a9c-63cf-404d-8a49-8dcb116a29f3@postgrespro.ru
This commit is contained in:
Amit Kapila
2025-02-21 14:34:40 +05:30
parent 984410b923
commit b4e0d0c53f
3 changed files with 133 additions and 14 deletions
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12
doc/src/sgml/ref/create_subscription.sgml
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@ -534,12 +534,14 @@ CREATE SUBSCRIPTION <replaceable class="parameter">subscription_name</replaceabl
<programlisting>
# substitute &lt;pub-names&gt; below with your publication name(s) to be queried
SELECT DISTINCT PT.schemaname, PT.tablename
FROM pg_publication_tables PT,
FROM pg_publication_tables PT
JOIN pg_class C ON (C.relname = PT.tablename)
JOIN pg_namespace N ON (N.nspname = PT.schemaname),
pg_subscription_rel PS
JOIN pg_class C ON (C.oid = PS.srrelid)
JOIN pg_namespace N ON (N.oid = C.relnamespace)
WHERE N.nspname = PT.schemaname AND
C.relname = PT.tablename AND
WHERE C.relnamespace = N.oid AND
(PS.srrelid = C.oid OR
C.oid IN (SELECT relid FROM pg_partition_ancestors(PS.srrelid) UNION
SELECT relid FROM pg_partition_tree(PS.srrelid))) AND
PT.pubname IN (&lt;pub-names&gt;);
</programlisting></para>