Simon Riggs wrote:

> I'm now happy that we can get a spec-compliant end result by always
> forcing NOT MATCHED rules to occur before MATCHED rules, when we have at
> least one unique index.

... and raise an ERROR when there is no unique index?

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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