Using a cursor in a stored procedure - stored-procedures

Question

I want to find the min, max and average for each quarter using stored procedure and cursors. Can't figure out where am I going wrong.
SET SERVEROUTPUT ON
CREATE OR REPLACE PROCEDURE seven2
IS
CURSOR c1 IS
SELECT
qtrcode as QTR,
cast(MIN(salaryoffered) as decimal(4,2)) as MIN,
cast(MAX(salaryoffered) as decimal(4,2)) as MAX,
cast(AVG(salaryoffered) as decimal(4,2)) as AVG
FROM
interview
GROUP BY
qtrcode
ORDER BY
qtrcode
BEGIN
FOR qtrcode in c1
LOOP
dbms_output.put_line(min || ' ' ||max|| ' ' ||avg);
END LOOP;
END;
/
Can we add padding functions to the above query and if so how?

Answer 1

I have created the interview table with just 2 columns for the example purpose and inserted some dummy data, see the changes in the procedure, it works fine now
SQL>
SQL> desc interview
Name Null? Type
------------------------------------------------------------------------ -------- -------------------------------
SALARYOFFERED NUMBER(10,2)
QTRCODE VARCHAR2(4)
SQL>
SQL> CREATE OR REPLACE PROCEDURE seven2
2 IS
3 CURSOR c1 IS
4 SELECT
5 qtrcode as QTR,
6 cast(MIN(salaryoffered) as decimal(10,4)) as MIN,
7 cast(MAX(salaryoffered) as decimal(10,4)) as MAX,
8 cast(AVG(salaryoffered) as decimal(10,4)) as AVG
9 FROM
10 interview
11 GROUP BY
12 qtrcode
13 ORDER BY
14 qtrcode ;
15
16 BEGIN
17 FOR qtrcode in c1
18 LOOP
19 dbms_output.put_line('The qtr is ' || qtrcode.qtr ||' The min sal is '|| qtrcode.min || ' The max sal is ' || qtrcode.max|| ' The avg sal is' ||qtrcode.avg);
20 END LOOP;
21 END;
22 /
Procedure created.
SQL> exec seven2;
The qtr is Q1 The min sal is 137.07 The max sal is 964.66 The avg sal is 580.8748
The qtr is Q2 The min sal is 127.79 The max sal is 938.49 The avg sal is 550.52
The qtr is Q3 The min sal is 231.1 The max sal is 992.45 The avg sal is 672.59
The qtr is Q4 The min sal is 103.19 The max sal is 960.13 The avg sal is 431.318
PL/SQL procedure successfully completed.
SQL>