Sorry I responded that quickly this early.  I keep having additional
thoughts....
 
"Kevin Grittner" <kevin.gritt...@wicourts.gov> wrote: 
> Tom Lane <t...@sss.pgh.pa.us> wrote:
 
>> And especially, how could you have per-column targets?
 
> Yeah, this would have to be done by table, not by column.
 
If we had an optional two targets by column, we could pass any columns
with such targets as a "step 0", before starting the tuple size
checks.  I think that makes sense, so I'm flip-flopping on that as a
possibility.
 
Now, whether that's overkill is another question.
 
-Kevin

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