you could use distinct on
select distinct on (fs.film.title, fs.film.year ) title, year
from fs.film left join fs.star on fs.film.id = fs.star.film
where fs.star.last = 'Sheen';
On Sat, 2009-10-10 at 00:53 +0200, Dag-Erling Smørgrav wrote:
> Consider the attached schema (filmstars.sql), which i
first define a custom type, then drop the out parameters.
create type mytype as (
i integer,
j text );
create or replace function outtest()
returns mytype as
$BODY$
i = 1
j = 'something'
return ( i, j )
$BODY$
language plpythonu;
select * from outtest();
i | j
---+---
1 | someth
you can also generate a crosstab table using the sign function
you can check out the link below ( its a sqlite tutorial, but the same
idea will work for pg too )
http://souptonuts.sourceforge.net/readme_sqlite_tutorial.html
On 03/09/2011 12:16 PM, Eric Ndengang wrote:
Hi Guys,
I have the fo
I am attempting to create a moving average elements function that will
return a set of elements in a particular moving average and am having
difficulty iterating thrrough the passed in array properly. Any help
would be greatly appreciated.
code below...
select getmovavgelements( aggarray(trade_d
ent)
> is that you are incrementing idxptr explicitly in your loop. The FOR
> loop does that for you. This is the reason your output shows only
> even values.
>
> John
>
>
> On Apr 24, 2007, at 4:42 PM, Richard Albright wrote:
>
> > for idxptr in 1 .. arr
I have figured out my looping issue, but am having difficulty wrapping
my set returning plpgsql function getmovavgset with a getmovavg sql func
when i run the following:
select getmovavg(aggarray(trade_date), aggarray(close_price),
'2004-01-20', 5)
from
( select trade_date, close_price::n
gt; and trade_date > '2004-01-01'
> order by trade_date desc) values
whereas
select * from getmovavg(array['2007-04-03', '2007-04-02',
'2007-04-01']::timestamp[], array[4.0,3.0,2.0]::numeric[], '2007-04-03',
3)
will work. anyon
I narrowed it down further. Can someone explain the difference between
passing array[...] and passing an array using an aggregate array
function into the function?
On Wed, 2007-04-25 at 14:45 -0400, Richard Albright wrote:
> It turns out that the from subselect is causing the error
my_column = 'foo'
sql = 'select col1, col2, ' || my_column || ' as bar from mytable;
for myrecord in execute sql
loop
myvariable = myrecord.bar
end loop;
On Wed, 2007-05-02 at 12:17 -0700, Collin Peters wrote:
> In plpgsl, if I have a RECORD variable that is populated via some
> dynamic SQ
