On Mon, 2016-04-18 at 14:19 -0400, Tom Lane wrote:
> If they might change later, they're not really constants, hm? The
> usual advice for this sort of thing is to store them in a table.
They're variable only in the sense that they could vary after many
months, but constant enough that treating them as such allows us the
potential benefit of optimization.
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Kip Warner -- Senior Software Engineer
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