Wrong number or types to call put_line.

Question

I feel like I should know this but for some reason I am having a hard time putting something together to work. The initial SELECT statement:
SELECT dept, AVG(end_dt-start_dt) AS new_date FROM dept_dates GROUP BY dept;
ran outside the PL/SQL block returns the following:
DEPT NEW_DATE
Marketing 4.56
Adminis 5.43
Purch 2.33
When I run it inside a PL/SQL block and I try to use DBMS_OUTPUT.PUT_LINE, such as:
DECLARE
v_dept VARCHAR2(50);
v_new_date NUMBER;
BEGIN
SELECT dept, AVG(end_dt-start_dt) AS new_date
INTO v_dept, v_new_date
FROM dept_dates
GROUP BY dept;
DBMS_OUTPUT.ENABLE(100000);
DBMS_OUTPUT.PUT_LINE(v_dept,v_new_date);
END;
I get the error msg PLS-00306 wrong number or types of arguments in call to 'PUT_LINE'. Can someone please give me a quick rundown in how I can use the group by function and still us the put_line (or similar) function. It would be a great help. Thanks-Adam

Answer 1

Thanks for the help but I tried both methods and return the following:
Error report:
ORA-01422: exact fetch returns more then requested number of rows
ORA-06512: at line 5
01422. 00000 - "exact fetch returns more than requested number of rows"
*Cause:    The number specified in exact fetch is less than the rows returned
*Action:    Rewrite the query or change number of rows requested.