Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> writes:
> I found that fetch_more_data_begin() in postgres_fdw reports an error when PQsendQuery() returns the value less than 0 as follows though PQsendQuery() can return only 1 or 0. I think this is a bug. Attached is the patch that fixes this bug. This needs to be back-ported to v14 where async execution was supported in postgres_fdw.
Yup, clearly a thinko.
regards, tom lane