Alvaro Herrera wrote:
> (Tom Lane says both SQL92 and SQL99 specify 128 as the maximun
> identifier length)
> 
> Anyway, how does one measure the perfomance impact of such a change?
> By merely changing the constant definition, or also by actually using
> long identifiers? I can do that if it's of any help, for various values
> perhaps.

I think I would measure disk size change in a newly created database,
and run regression for various values.  That uses a lot of identifier
lookups.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
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