On 07/24/2014 05:54 AM, Ramesh T wrote:
CREATE OR REPLACE TYPE t_varchar2_tab AS TABLE OF VARCHAR2(4000);
/
CREATE OR REPLACE FUNCTION tab_to_string (p_varchar2_tab IN
t_varchar2_tab,
p_delimiter IN VARCHAR2
DEFAULT ',') RETURN VARCHAR2 IS
l_string VARCHAR2(32767);
BEGIN
FOR i IN p_varchar2_tab.FIRST .. p_varchar2_tab.LAST LOOP
IF i != p_varchar2_tab.FIRST THEN
l_string := l_string || p_delimiter;
END IF;
l_string := l_string || p_varchar2_tab(i);
END LOOP;
RETURN l_string;
END tab_to_string;
/
The query below shows the COLLECT function in action.
COLUMN employees FORMAT A50
SELECT deptno,
tab_to_string(CAST(COLLECT(ename) AS t_varchar2_tab)) AS employees
FROM emp
GROUP BY deptno;
DEPTNO EMPLOYEES
---------- --------------------------------------------------
10 CLARK,KING,MILLER
20 SMITH,JONES,SCOTT,ADAMS,FORD
30 ALLEN,WARD,MARTIN,BLAKE,TURNER,JAMES
this function i need to run run in postgres. i think t_varchar2_tab
is the create type in oracle ,we need to replace t_varchar2_tab with
other type ..?
i need this one please let me know..
Well following Hubert's suggestion, here is a SO answer using the
string_agg function that seems to apply.
thanks in advance ,
ramesh
--
Adrian Klaver
[email protected]
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