> No, it is not the same thing. Updating index snapshots requires being
> able to *re-find* a previously made index entry for the current row.
> And it has to be done 100% reliably. The worst that happens if an index
> entry is not found when it should be during a uniqueness check is that
> the uniqueness constraint is not enforced properly; which is bad but it
> doesn't lead to internally-inconsistent data structures.
Hmmm... OK Fine... I am leaving this proposal once and for all.
> Pretending the problem doesn't exist doesn't make it go away ...
> Because this is how it is done in other databases
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