> On Jun 20, 2014, at 10:01 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> Some of my Salesforce colleagues are looking into making every system
> catalog be declared with a true primary key. They came across the
> fact that pg_seclabel and pg_shseclabel are declared with unique
> indexes that include the "provider" column, but that column does not
> get marked as NOT NULL during initdb. Shouldn't it be?
At some point, I inferred a rule that catalog columns were intended to be
either both fixed-width and not nullable; or variable-width and nullable. I
believe the current situation is the result of that inference... but I see no
particular reason not to change it.
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