> Yes. Before doing this change, it is better to confirm the approach and
> then do all the changes.
> 1. Does everyone agrees that renaming the existing datatype without
> changing the OID?

As I said before, Npgsql for one loads data types by name, not by OID. So
this would definitely cause breakage.

For users who actually need the new variable-length type, it seems
perfectly reasonable to ask to switch to a new type - after all they're
making a change in their system. It would really be preferable to leave the
current type alone and create a new one.

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