ALTER TABLE...ADD CONSTRAINT?

At 10:21 23/11/00 +0800, Christopher Kings-Lynne wrote:
>
>I'm just asking, because I'm still trying to find something small and
>self-contained I can work on!
>

Is anybody working on:

alter table <table> add constraint <name> primary key(column,...);

or

alter table <table> add constraint <name> unique(column,...);

or

alter table drop constraint

I guess this is not really a small task as it relates to unifying
constraint handling, but for the PK & unique constraints at least, we must
already have code that does the work - all(?) that has to happen is to make
sure the ALTER command calls it...is that right?

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