On Thu, 2003-06-19 at 15:00, Tom Lane wrote:
> Rod Taylor <[EMAIL PROTECTED]> writes:
> > Right now if the column exists in the child table, the add column is
> > rejected.  I assume that will remain.
> Have you actually tried it?

I used different datatypes which, of course, was the wrong test.

When I update the values in t1 I need to ensure I only get data from t1
that has the new column NULL.

Constraints to be checked are still only the ones attached to the
altered table directly.  A constraint on t1 only will not affect data on


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