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Re: WIP: to_char, support for EEEE format

From: Euler Taveira de Oliveira <euler(at)timbira(dot)com>
To: Brendan Jurd <direvus(at)gmail(dot)com>
Cc: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: WIP: to_char, support for EEEE format
Date: 2009-07-30 16:57:44
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Lists: pgsql-hackers
Brendan Jurd escreveu:
> 2009/7/31 Euler Taveira de Oliveira <euler(at)timbira(dot)com>:
>> Brendan Jurd escreveu:
>>> Limiting to two exponent digits also has the nice property that the
>>> output always matches the length of the format pattern:
>>> 9.99EEEE
>>> 1.23E+02
>> I don't think neglecting to represent a valid number is a "nice property".
>> What does the length of format pattern have to do with output format?
> Most of the format patterns in to_char() are chosen to match the
> length of their expected output.  The output of "DD" is two
> characters, "Mon" is three and so on.
Brendan, the main point of to_*() functions is Oracle-compatibility. So let's
just do it. No matter it seems bizarre (like 999.99EEEE).

> That's why the scientific notation pattern is "EEEE" and not just "E".
I don't know. Ask Oracle. ;) We don't need to bother with that. Let's just be

  Euler Taveira de Oliveira

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