Phil Sorber <phil@omniti.com> writes:
> http://www.postgresql.org/docs/devel/static/plpgsql-control-structures.html#PLPGSQL-UPSERT-EXAMPLE
> This example can lead to an infinite loop if there is another column
> that has a unique key constraint on it in addition to the primary key
> and someone tries to execute the function with a unique primary key
> but a duplicate value for the column with the unique constraint.
Hmm. It might work, depending on what the table's various unique
indexes are for, but I agree that a caution about the case is
reasonable. I adjusted your text a bit and committed this.
regards, tom lane
