Re: How do I get min and max from an array of floating point values - Mailing list pgsql-sql

From Pavel Stehule
Subject Re: How do I get min and max from an array of floating point values
Date
Msg-id 162867790809030043s7147421t47328fd36f365a93@mail.gmail.com
Whole thread Raw
In response to How do I get min and max from an array of floating point values  (pw <p.willis@telus.net>)
Responses Re: How do I get min and max from an array of floating point values  ("Yura Gal" <yuragal@gmail.com>)
List pgsql-sql
Hello

2008/9/2 pw <p.willis@telus.net>:
> Hello,
>
> Is it possible to get the min and max from an array of
> floating point values?
>
> The following doesn't return the min of the array values
> it simply returns the complete array...(??)
>
> SELECT min(string_to_array('1,2,3,4,5,6,7',',')::float[]);
>
> Thanks
>
> Peter
>

you should function
create function minimum(anyarray)
returns anyelement as $$
select min($1[i]) from generate_series(array_lower($1,1),
array_upper($1,1)) g(i);
$$ language sql immutable strict;

reagards
Pavel Stehule

> --
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-sql
>


pgsql-sql by date:

Previous
From: "Claus Guttesen"
Date:
Subject: Re: seemingly slow for-loop in plpgsql
Next
From: "Richard Broersma"
Date:
Subject: Re: order of rows in update