Daniel Frey wrote:
> I tried to understand the interaction between Pipeline Mode and
> Single Row Mode / Chunked Rows Mode. It seems that it works
> sometimes, but I don't get the feeling that it was deliberately
> designed to work consistently
It's supposed to work, and there are regression tests in
src/test/modules/libpq_pipeline/libpq_pipeline.c [1]
that exercise the single row mode and PQpipelineSync().
You might want to compare your code workflow with how it's done in
that file, and maybe submit a bug report with your test case if the
conclusion is that your code should not error out.
[1]
https://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/test/modules/libpq_pipeline/libpq_pipeline.c
Best regards,
--
Daniel Vérité
https://postgresql.verite.pro/
Twitter: @DanielVerite
