In v9, I've simplified the patch somewhat to make it easier for future
work to build on.
- When truncating on month-or-greater intervals, require the origin to
align on month. This removes the need to handle weird corner cases
that have no straightforward behavior.
- Remove hackish and possibly broken code to allow origin to be after
the input timestamp. The default origin is Jan 1, 1 AD, so only AD
dates will behave correctly by default. This is not enforced for now,
since it may be desirable to find a way to get this to work in a nicer
way.
- Rebase docs over PG13 formatting changes.
--
John Naylor https://www.2ndQuadrant.com/
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