Thread: Bug in docs - modifiers for to_char()

Hi,
in Table 9-23
(http://www.postgresql.org/docs/devel/static/functions-formatting.html)

It says:

> FM prefix | fill mode (suppress padding blanks and trailing zeroes)

In next part it says:

> FM suppresses leading zeroes and trailing blanks

From all I can tell, the text in table is wrong - wasn't able to find
any case where FM would delete trailing zeros, and it definitely removes
leading ones.

depesz

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hubert depesz lubaczewski <depesz@depesz.com> writes:
> in Table 9-23
> (http://www.postgresql.org/docs/devel/static/functions-formatting.html)
> It says:
>> FM prefix | fill mode (suppress padding blanks and trailing zeroes)
> In next part it says:
>> FM suppresses leading zeroes and trailing blanks
> From all I can tell, the text in table is wrong - wasn't able to find
> any case where FM would delete trailing zeros, and it definitely removes
> leading ones.

Yeah, you're right.

I also fail to find anyplace where it explains what FM does for input
cases. However, to_number/to_date/to_timestamp are woefully
underdocumented anyhow (eg, almost no examples), so maybe that would
be better addressed as part of a larger rewrite.

            regards, tom lane