Dear community, Right after upgrading our postgres servers from 11.15 to 11.17 we started to encounter problems with data. Namely, when the query hit the index, it returned a single row; when the query hit a relation directly, it returned more than one row. Attempt to REINDEX revealed the underlying data had duplicates (unique index reindexing failed). Version facts: we started out with 11.12 jan 2022 upgraded to 11.14 mar 2022 to 11.15 oct 2022 to 11.17 We are not sure when this corruption actually happened. Could it be related to the indexing bugs reported in https://www.postgresql.org/docs/release/11.14/? And the condition only became known to us after 11.17 rollout which can perhaps be explained by the following: while 11.17 does not have any outstanding index related fixes, then https://www.postgresql.org/docs/release/11.15/ mentions fix for index-only scans and so does https://www.postgresql.org/docs/release/11.16/. The bottom line is we would like to understand if the index corruption and its manifestation is explained by the above release fixes or is there something else that should be investigated further here with the help from the community. With best regards, -- Kristjan Mustkivi Email: kristjan.mustkivi@xxxxxxxxx
