"David G. Johnston" <david.g.johnston@gmail.com> writes:
> And we are back around to the fact that only by using libpq directly, or
> via the pipeline feature of pgbench, can one actually exert control over
> the implicit transaction. The psql and general SQL interface
> implementation are just going to Sync after each command and so everything
> looks like one transaction per command to them and only explicit
> transactions matter.
Right.
> From that, the adjustment you describe above is sufficient for me.
Cool, I'll set about back-patching.
regards, tom lane