Re: SQL:2003 Statistical functions - What are they?

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От Bruce Momjian
Тема Re: SQL:2003 Statistical functions - What are they?
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Msg-id 200610042119.k94LJSa19759@momjian.us
обсуждение исходный текст
Ответ на Re: SQL:2003 Statistical functions - What are they?  ("Merlin Moncure" <mmoncure@gmail.com>)
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Merlin Moncure wrote:
> On 10/4/06, Obe, Regina <robe.dnd@cityofboston.gov> wrote:
> > I'm not sure this is the right group to ask this.  I see that the 8.2
> > notes say all SQL:2003 statistical functions are implemented in 8.2, but
> > I couldn't find a listing for those anywhere I looked.
> >
> > For those who are clueless like me,  can someone provide a listing of
> > what these functions are?
> 
> 
> look in the aggregate functions (9.15) section of the developers documentation.
> http://developer.postgresql.org/pgdocs/postgres/index.html
> 
> However, the release notes mentioned array improvements and I didn't
> see anything in the documentation, are these functions listed
> somewhere?

From release notes:
     <listitem>      <para>       Add SQL2003-standard statistical aggregates (Sergey Koposov)      </para>
      <para>       New functions:  <function>regr_intercept()</>,       <function>regr_slope()</>,
<function>regr_r2()</>,      <function>corr()</>, <function>covar_samp()</>,       <function>covar_pop()</>,
<function>regr_avgx()</>,      <function>regr_avgy()</>, <function>regr_sxy()</>,       <function>regr_sxx()</>,
<function>regr_syy()</>,      <function>regr_count()</>.      </para>     </listitem>
 

--  Bruce Momjian   bruce@momjian.us EnterpriseDB    http://www.enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +


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