Alexander Korotkov <aekorot...@gmail.com> writes:
> It seems reasonable to me to cast enum to oid. However, creating casts
> without function isn't allowed for enums.
> test=# create cast (source as oid) without function;
> ERROR: enum data types are not binary-compatible
The reason for that is you'd get randomly different results on another
installation. In this particular application, I think David doesn't
really care about what values he gets as long as they're distinct,
so this might be an OK workaround for him. But that's the reasoning
for the general prohibition.
regards, tom lane
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