Re: rounding down a number

Поиск
Список
Период
Сортировка
От Duncan Garland
Тема Re: rounding down a number
Дата
Msg-id MBEPKEEDMKGCDODFKLPPIEAEEGAA.duncan.garland@ntlworld.com
обсуждение исходный текст
Ответ на rounding down a number  ("Michael" <mmcelarn@hotmail.com>)
Список pgsql-novice
What behaviour are you expecting for negative numbers? This is what my function does:
 
SELECT f_round( -100.0 ) FROM team LIMIT 1;
SELECT f_round( -100.1 ) FROM team LIMIT 1;
SELECT f_round( -100.4 ) FROM team LIMIT 1;
SELECT f_round( -100.4999999999 ) FROM team LIMIT 1;
SELECT f_round( -100.5 ) FROM team LIMIT 1;
SELECT f_round( -100.5000000001 ) FROM team LIMIT 1;
SELECT f_round( -100.6 ) FROM team LIMIT 1;
SELECT f_round( -100.9 ) FROM team LIMIT 1;
 f_round
---------
    -100
(1 row)
 
 f_round
---------
    -100
(1 row)
 
 f_round
---------
    -100
(1 row)
 
 f_round
---------
    -100
(1 row)
 
 f_round
---------
    -101
(1 row)
 
 f_round
---------
    -101
(1 row)
 
 f_round
---------
    -101
(1 row)
 
 f_round
---------
    -101
(1 row)
-----Original Message-----
From: pgsql-novice-owner@postgresql.org [mailto:pgsql-novice-owner@postgresql.org]On Behalf Of Michael
Sent: 30 March 2007 22:39
To: pgsql-novice@postgresql.org
Subject: [NOVICE] rounding down a number

Hi,

I’m trying to round down any number with a half, but keep the round function for all other fractions.

For example

 

 

100.1 becomes 100

100.4 becomes 100

100.5 becomes 100 (this one would ordinarily round to 101)

100.6 becomes 101

100.9 becomes 101

 

Thanks, Mick

В списке pgsql-novice по дате отправления:

Предыдущее
От: "Duncan Garland"
Дата:
Сообщение: Re: rounding down a number
Следующее
От: "David Monarchi"
Дата:
Сообщение: Behavior of hash index on a text field