We have a database with about 30 tables and some RI. The RI constraints, however, were not named upon creation of the database 2-3 years ago and now when we get an error it contains <unnamed> for the constraint.
I tried Google and the documentation, and I still have 2 questions -
1. Is it possible to rename RI_ConstraintTrigger, so that we do not get <unnamed> in the errors.
2. Is there somewhere explanation what the RI_FKey_ procedures mean?
I think RI stand for referential integrity. Foreign keys used to be implemented using 'create constraint trigger' which automatically names triggers 'RI_ConstraintTrigger_' then some integer which I guess is an oid (object id).
Constraint triggers execute functions to implement a constraint. RI_FKey_... are the functions that implement foreign key constraints for different events like insert, update, and delete.
When you upgrade a database it's likely that the oids for different database objects will change. In sounds like somehow you upgraded and retained references to old oids which don't exist anymore. Just a guess.
I suggest you upgrade to a newer version of PostgreSQL and drop all of the 'RI_ConstraintTrigger_' trigger and recreate the foreign keys.
