Problem with the cursor TYPE

I have table with data week_tab

week_num bkg1 bkg2 bkg_type
1 10 20 at_prod
2 40 10 at_serv
3 30 20 prod
2 20 60 at_prod
1 10 50 at_serv
1 20 80 at_net
3 10 30 at_net

I'm putting this request in a cursor

SELECT SUM (bkg2), bkg_type
OF week_tab
WHERE bkg_type LIKE 'to %.
GROUP BY bkg_type;

PROCEDURE get_bkg_tot)
p_colName IN VARCHAR2,
p_refCursor OUT ref_cursor) AS

v_query VARCHAR2 (4000);

BEGIN
v_query: = ' select sum('|| p_colName ||'), bkg_type
of week_tab
where bkg_type like: x
Bkg_type group ';

P_refcursor OPEN FOR v_query 'than ';
END;
--------------------------------------------------------------------------------
PROCEDURE get_total_val AS
v_refCursor ref_cursor;
v_sum NUMBER;
v_week NUMBER;
v_total NUMBER: = 0;
STRARRAY v_colName: = STRARRAY ('BKG1', 'BKG2');

BEGIN

I'm IN v_colName.FIRST... v_colName.Last LOOP

get_bkg_tot ("bkg2", v_refcursor);
LOOP
EXTRACTION v_refCursor
IN v_sum, v_week;
EXIT WHEN v_refcursor % NOTFOUND;
v_total: = v_total + v_sum;
DBMS_OUTPUT. Put_line (' week ' | v_week |': ' | v_sum);
END LOOP;
DBMS_OUTPUT. Put_line (' total sales reservations :'|| v_total);

END LOOP;
END get_total_val;

When I tried to run get_total_val, I get

ORA-01722: invalid number
ORA-06512: at "SCOTT. GET_TOTAL", line 45
ORA-06512: at line 2

What could be the error?

Thanks in advance

Well, look at the query behind your refcursor:

v_query := 'select sum('||p_colName||'), bkg_type
from week_tab
where bkg_type like : x
group by bkg_type';

Based on your sample bkg_type is a string.

Now consider the procedure get_total_val. It retrieves bkg_type in NUMBER variable v_week. No wonder you get ORA-01722: invalid number.

SY.

Tags: Database

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