Displaying table data through plsql procedure - plsql

Question

I am trying to display the table info through this plsql code but when it executes the procedure it just show procedure successful. not the output.please help.
CREATE OR REPLACE PROCEDURE CarInfo
AS
V_serial CAR.serial%TYPE;
V_Cid CAR.cid%TYPE;
V_make CAR.make%TYPE ;
V_model CAR.model%TYPE;
V_cyear CAR.cyear%TYPE;
V_color CAR.color%TYPE;
V_trim CAR.trim%TYPE;
V_enginetype CAR.enginetype%TYPE;
V_purchinv CAR.purchinv%TYPE;
V_purchdate CAR.purchdate%TYPE;
V_purchfrom CAR.purchfrom%TYPE;
V_purchcost CAR.purchcost%TYPE;
V_freightcost CAR.freightcost%TYPE;
V_totalcost CAR.totalcost%TYPE;
V_listprice CAR.listprice%TYPE;
BEGIN
SELECT serial, cid, make, model, cyear, color, trim, enginetype, purchinv, purchdate, purchfrom , purchcost, freightcost,
totalcost, listprice
INTO V_serial, V_cid, V_make, V_model, V_cyear, V_color, V_trim, V_enginetype, V_purchinv, V_purchdate, V_purchfrom , V_purchcost, V_freightcost,
V_totalcost, V_listprice
FROM CAR
where cid is null;
Exception
WHEN NO_DATA_FOUND THEN
dbms_output.put_line('No Data Found') ;
DBMS_OUTPUT.PUT_LINE(V_serial||' ' || V_cid||' ' ||V_make||' ' ||V_model||' ' ||V_cyear||' ' ||V_color||' ' ||V_trim||' ' ||V_enginetype||' ' ||V_purchinv||' ' ||V_purchdate||' ' ||V_purchfrom ||' ' ||V_purchcost||' ' ||V_freightcost||' ' ||
V_totalcost||' ' ||V_listprice);
END;

Answer 1

In brief, I would write your procedure the following way:
CREATE OR REPLACE PROCEDURE CarInfo
AS
l_result_clob clob;
BEGIN
SELECT serial ||' ' || cid ||' ' ||make ||' ' ||model ||' ' ||cyear||' ' ||
color ||' ' ||trim ||' ' ||enginetype||' ' ||purchinv ||' ' ||
purchdate||' ' ||purchfrom ||' ' ||purchcost ||' ' ||freightcost||' ' ||totalcost||' ' ||listprice
INTO l_result_clob
FROM CAR
where cid is null;
DBMS_OUTPUT.PUT_LINE(l_result_clob);
Exception
WHEN NO_DATA_FOUND THEN
dbms_output.put_line('No Data Found') ;
WHEN OTHERS THEN
dbms_output.put_line('SQLCODE: ' || SQLCODE) ;
END CarInfo;
That is of course, if all the columns in the SELECT statement are actually convertible to character/clob, as Oracle would implicitly convert them, in order for the concatenation to happen.
Cheers