Tomas Vondra-4 wrote
> But if we want to allow users to define this, I'd say let's make that
> part of CREATE TABLE, i.e. the order of columns defines logical order,
> and you use something like 'AFTER' to specify physical order.
>
> CREATE TABLE test (
> a INT AFTER b, -- attlognum = 1, attphysnum = 2
> b INT -- attlognum = 2, attphysnum = 1
> );
Why not memorialize this as a storage parameter?
CREATE TABLE test ( a INT, b INT
)
WITH (layout = 'b, a')
;
A canonical form should be defined and then ALTER TABLE can either directly
update the current value or require the user to specify a new layout before
it will perform the alteration.
David J.
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