From a language definition perspective, it is helpful to have a name for
every case instead of an implicit fallback, without any word to describe
it. See for instance "CREATE USER CREATEDB/NOCREATEDB" or "CREATE RULE ...
DO ALSO/INSTEAD" for similar occurences of naming default cases.
Oddly enough, we did add the DO ALSO syntax much later, and no one
complained about that, as far as I recall.
I complained:-) and I submitted the patch then, AFAICR.
--
Fabien.
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