am Thu, dem 03.04.2008, um 15:54:56 +0530 mailte Anoop G folgendes:
> hai all,
> I want to select dat_replacement between now () and now - 5 dyas or
now -7
> days like that i want to pass the integer value as argument to the
function.
I show you a similar solution:
test=*# select * from foo;
i | ts
---+-------------------------------
1 | 2008-03-31 15:11:36.214272+02
(1 row)
test=*# create or replace function f1(in i int, out t timestamptz) returns
setof timestamptz as $$
declare r record;s timestamptz;
begin
s:=current_timestamp-i * '1day'::interval;
for r in select * from foo where ts between s and current_timestamp loop
raise notice '--> %',$1;
t:=r.ts;
return next;
end loop;
raise notice '%',s;
end;
$$ language plpgsql;
CREATE FUNCTION
test=*# select * from f1(1);
NOTICE: 2008-04-02 13:05:08.48866+02
t
---
(0 rows)
test=*# select * from f1(10);
NOTICE: --> 10
NOTICE: 2008-03-24 13:05:08.48866+01
t
-------------------------------
2008-03-31 15:11:36.214272+02
(1 row)
More examples with IN/OUT - parameters:
http://people.planetpostgresql.org/xzilla/index.php?/archives/149-out-parameter-sql-plpgsql-examples.html#extended
HTH, Andreas
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Andreas Kretschmer
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