Hi Adrian,
Now I am not sure what you did.
Are you saying you used a CHECK constraint to check for NULL values?
That's right. Something like:
ALTER TABLE foo ADD CONSTRAINT bar_not_null CHECK (bar IS NOT NULL) NOT VALID
If so then pg_constraint.convalidated would work.
You're right. I didn't immediately find what I was looking for, and when I looked at the docs for pg_constraints, I guess I confused myself with this comment:
> Not-null constraints are represented in the
pg_attribute catalog, not here.
Thanks for the assistance.
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