=?ISO-8859-1?Q?St=E9phan_BEUZE?= <stephan.be...@douane.finances.gouv.fr> writes: >> So the question is about used extensions or contrib. (it can be loaded >> by server, or in a session with LOAD, it can be auto-explain, >> pg_stat_statement, ....).
> I don't use any used extensions or contrib. Well, you're doing *something* that you have not told us about. As Robert said, the only places where that error can be thrown are simple_heap_update and simple_heap_delete, and neither of those are reachable from an INSERT command unless something is happening behind the scenes. Maybe you have an ON INSERT trigger on that table? Another point here is that the NOT EXISTS coding seems to be trying to prevent insertion of any duplicate rows into my_stat, but it will fail miserably as soon as there are multiple processes doing that command concurrently, since the NOT EXISTS check will only examine rows that were committed before the command starts, not any that get committed while it runs. I wonder whether you have code you've not shown us that depends on the assumption of no duplicates in my_stat, and will lead to multiple-update attempts somewhere else as soon as such duplicates appear. regards, tom lane -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers