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Using ALTER TABLE ATTACH PARTITION causes an assertion failure when attempting to work on a partitioned index, because partitioned indexes cannot have partition bounds. The grammar of ALTER TABLE ATTACH PARTITION requires partition bounds, but not ALTER INDEX, so mixing ALTER TABLE with partitioned indexes is confusing. Hence, on HEAD, prevent ALTER TABLE to attach a partition if the relation involved is a partitioned index. On back-branches, as applications may rely on the existing behavior, just remove the culprit assertion. Reported-by: Alexander Lakhin Author: Amit Langote, Michael Paquier Discussion: https://postgr.es/m/16276-5cd1dcc8fb8be7b5@postgresql.org Backpatch-through: 11
Documentation concerning how to run these regression tests and interpret the results can be found in the PostgreSQL manual, in the chapter "Regression Tests".