Adrian Klaver <adrian.klaver@xxxxxxxxxxx> writes: > Unless folks are using plain text only email readers. That is why > screenshots are generally a bad idea for textual information. For the > record the Postgres version is 12.8. Hmm, if it's v12 then NodeTag 223 is T_List, which is ... a bit surprising. That's a common enough node type that "oversight" doesn't seem to fly as an explanation. I don't think we'll be able to make progress on this without a lot more detail. A self-contained example that triggers it would be very useful; or maybe you could get a backtrace from the point of the error? https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend regards, tom lane