Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> Tom Lane writes:
>> Hmm ... now that's an interesting thought. So the input converter would
>> actively strip trailing blanks, output would add them back,
> But how would the output know how many to put back?
The output routine would need access to the column typmod. Which it
would have, in simple "SELECT columnname" cases, but this is a serious
weakness of the scheme in general. See my followup post of a few
minutes ago.
regards, tom lane