i solved my problem using string_agg in tab_to_string
ex:-
select string_agg(s.Rnumber ::text,',' )AS number
On Fri, Feb 13, 2015 at 10:40 PM, Raymond O'Donnell <rod@iol.ie> wrote:
On 13/02/2015 13:13, Ramesh T wrote: > cast(COLLECT (r_id) as num) in oracle.. > > is their *collect *function in postgres plpgsql....?or any alternate > for this..?
I don't use Oracle, but I think array_agg() is the closest - it aggregates the column into an array.
postgres=# create table test(a integer, b text); CREATE TABLE postgres=# insert into test values (1, 'abc'); INSERT 0 1 postgres=# insert into test values (2, 'def'); INSERT 0 1 postgres=# insert into test values (2, 'ghi'); INSERT 0 1 postgres=# select a, array_agg(b) from test group by a; a | array_agg ---+----------- 1 | {abc} 2 | {def,ghi} (2 rows)
Ray. -- Raymond O'Donnell :: Galway :: Ireland rod@iol.ie