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When a partition is created as part of a trigger processing, it is possible that the partition which just gets created changes the properties of the table the executor of the ongoing command relies on, causing a subsequent crash. This has been found possible when for example using a BEFORE INSERT which creates a new partition for a partitioned table being inserted to. Any attempt to do so is blocked when working on a partition, with regression tests added for both CREATE TABLE PARTITION OF and ALTER TABLE ATTACH PARTITION. Reported-by: Dmitry Shalashov Author: Amit Langote Reviewed-by: Michael Paquier, Tom Lane Discussion: https://postgr.es/m/15437-3fe01ee66bd1bae1@postgresql.org Backpatch-through: 10 |
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