So I have to adjust a primary key by adding one to every existing record.
Obviously this isn't a routine operation, my data model isn't that messed up.
It's a one-time manual operation.
However when I tried to do the equivalent of:
update tab set pk = pk + 1
I got
ERROR: Cannot insert a duplicate key into unique index tab_pkey
Is that right? Obviously after completing the query there would be no
duplicate keys. Is this a case where I would need deferred constraints to
allow this? Even for immediate constraints shouldn't a single sql update be
able to go ahead as long as it leaves things in a consistent state?
--
greg
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