Karel Zak <zakkr@zf.jcu.cz> writes:
> Hmm, if we want to support conversion like:
> '43 hours 20 minutes' --> 'MI min'
> how we should work with calendar INTERVAL units? For example 'month'?
> '1 month 1 day' --> 'D days'
> I think answer should be error message: "missing calendar unit 'month'
> in output format"
Surely not. to_char for timestamps doesn't require that you output
every field of the value, and it shouldn't require that for intervals
either.
regression=# select to_char(now(), 'MI "min"');to_char
---------58 min
(1 row)
regards, tom lane