Hi

Is there any particular reason why PersistentDuration uses VARCHAR as
the underlying column type? It means that values are not reliably
sortable in SQL queries as Duration's toString value will not
alphasort. I can understand that trying to sort on a Period would be
undesirable (e.g. 30 days and 12 hours is sometimes > 1 month and
sometimes < 1 month) but Duration is simply a millisecond value under
the hood and that would seem to me the best way to store it.

Cheers,
Rob Fletcher

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