On 2021-07-08 13:30, Ron wrote:
> Thus, the bigTable PK must be on id, columnX, (No, I don't like it
> either.)

That's not entirely true. You can keep the PK on id if you additionally
create a unique constraint on (id, columnX).

That way, you can at least be certain that the uniqueness of the PK
remains in-tact, even if that is a surrogate key that has nothing to do
with the uniqueness of the actual records.

Regards,

Alban Hertroys.

Alban Hertroys

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