On 02/09/2018 19:00, Tom Lane wrote:
> This also points up the lack of a suitable unique index on pg_constraint.
> It's sort of difficult to figure out what that should look like given that
> pg_constraint contains two quasi-independent collections of constraints,
> but maybe UNIQUE(conrelid,contypid,conname) would serve given the
> reasonable assumption that exactly one of conrelid and contypid is zero.
Sketches for assertions set both conrelid and contypid to zero. I think
the unique constraint would have to include connamespace to support that
properly.
--
Peter Eisentraut http://www.2ndQuadrant.com/
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