Bruce Momjian <pgman@candle.pha.pa.us> writes:
> This might be a stupid question, but why does one backend have to care
> about the global xmin at all? Isn't the local xmin the only important
> value?
Not when it's looking at shared tables.
Do you want to try to make the tqual code aware of whether it's looking
at a shared or nonshared table? I don't honestly think it's worth it...
regards, tom lane