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When trying to insert a tuple into a partitioned table, the routing to the correct partition has been messed up by mixing when a tuple needs to be stored in an intermediate parent's slot and when a tuple needs to be converted because of attribute changes between the immediate parent relation and the parent relation one level above that (the grandparent). This could trigger errors like the following: ERROR: cannot extract attribute from empty tuple slot SQL state: XX000 This was not detected because regression tests with dropped attributes only included tests with two levels of partitioning, and this can be triggered with three levels or more. This fixes bug #15733, which has been introduced by 34295b8. The bug happens only on REL_11_STABLE and HEAD gains the regression tests added for this bug. Reported-by: Petr Fedorov Author: Amit Langote, Michael Paquier Discussion: https://postgr.es/m/15733-7692379e310b80ec@postgresql.org
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