Re: [GENERAL] Calcuate percentage.

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От Marcin Grondecki
Тема Re: [GENERAL] Calcuate percentage.
Дата
Msg-id 3.0.6.32.19990309190203.0080bcf0@mtl.pl
обсуждение исходный текст
Ответ на Calcuate percentage.  (Sze Yuen Wong <swong_@yahoo.com>)
Список pgsql-general
select count (*) into t1 from t;
select count(varl), varl into t2 from t group by varl;
select varl, (t2.count*100/t1.count) from t2, t1;

and, of coz, drop tables t1 'n' t2 ;)
(i don't know it's my laminess, but syntax "select ... into TEMP ddd ...
does'n work for me - maybe suggestions? a bug i don't know about?)

At 06:54 99-03-09 -0800, you wrote:
>Hi,
>
> I need to calcuate the percentage from my table:
>
>var1
>------
>1
>1
>1
>2
>2
>3
>
>Desire result:
>
>var1 |  percentage
>----------------------------
>1      |    50%
>2      |    33%
>3      |    17%
>
>===============================
>
>Any clue?
>
>Please help.
>
>Sze Wong
>
>
>
>
>
>
>_________________________________________________________
>DO YOU YAHOO!?
>Get your free @yahoo.com address at http://mail.yahoo.com
>
>
>
Marcin Grondecki
ojciec@mtl.pl
+48(604)468725
***** I'm not a complete idiot, some parts are missing...


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