Maksim Karaba <Maksim_Karaba(at)epam(dot)com> writes:
> We added logging to the function and found out that the error always occurs on the same update
> (in attachments)
> Plan explain verbose in attachments
The point of my questions was that it's going to be difficult for anyone
to fix this unless we can reproduce the problem. What you've provided
doesn't even begin to make that possible. Please see the advice about
providing self-contained test cases at
https://www.postgresql.org/docs/current/static/bug-reporting.html
regards, tom lane