Rod Taylor wrote:
>>Or even better an offset into the datatable for the earliest deleted
>>row, so if you have a table where you update the row shortly after
>>insert and then never touch it vacuum can skip most of the table
>>(inserts are done at the end of the table, right?)
>
>
> Inserts are done at the end of the table as a last resort.
But if most of the table is never updated then the inserts would tend to
be at the end, right?
> But anyway,
> how do you handle a rolled back insert?
>
It is considered like a deleted row to be vacuumed.