PL/SQL anonymous block to test a procedure - stored-procedures

Question

pL/SQL PROCEDURE
This is the code for a procedure that takes the term,lineno,component name,student id,score as input and processes the student score.
The procedure should add the score into the scores table if there are no exceptions.
CODE
CREATE OR REPLACE PROCEDURE score_details
(aterm IN scores.Term%type,
alineno IN scores.Lineno%type,
acompname IN scores.Compname%type,
asid IN scores.sid%type,
apoints IN scores.points%type)
AS sterm scores.Term%type;
slineno scores.Lineno%type;
scompname scores.compname%type;
ssid scores.sid%type;
spoints scores.points%type;
BEGIN
SELECT term,lineno,compname,sid,points
INTO sterm,slineno,scompname,ssid,spoints
FROM scores
WHERE aterm=term AND alineno=Lineno AND acompname=compname AND asid=sid AND apoints=points;
EXCEPTION
when no_data_found THEN
dbms_output.put_line('Invalid details');
ANONYMOUS BLOCK
The below is the code for anonymous block to test the above procedure.
I'm not able to get the correct result.Please help me with the code.
ACCEPT prompt 'pterm','plineno','pcompname','psid','ppoints'
DECLARE pterm scores.Term%type;
plineno scores.Lineno%type;
pcompname scores.Compname%type;
psid scores.sid%type;
ppoints scores.points%type;
BEGIN
score_details(pterm,plineno,pcompname,psid,ppoints);
END

Answer 1

I'm going to assume that you've intentionally missed out most of the body of your stored procedure, as it fetches some values out of a table into some local variables and then does nothing with these values.
I'm guessing that you're wondering why the values you entered in the ACCEPT line didn't make it into the stored procedure call.
ACCEPT is a SQL*Plus statement that you can use to set substitution variables. The following example creates a substitution variable named colour and displays the result. The line Yellow was typed in by me:
SQL> ACCEPT &colour
Yellow
SQL> PROMPT Your favourite colour is &colour
Your favourite colour is Yellow
You can also provide a prompt to the user to clarify what you're asking for:
SQL> ACCEPT colour PROMPT 'Enter a colour > '
Enter a colour > Yellow
and you can also use substitution variables in SQL:
SQL> select '&colour' from dual;
old 1: select '&colour' from dual
new 1: select 'Yellow' from dual
'YELLO
------
Yellow
It seems there's two things not quite right with your PL/SQL block at the moment:
Your ACCEPT statement isn't working. You haven't quite got the order of the parts of it right (if used, PROMPT must come after the variable name). Also, I don't think you can set more than one substitution variable in a single ACCEPT.
You're not using the substitution variables that contain the values entered.
I'd therefore imagine that you'd want the call to your PL/SQL block to look a bit more like the following:
ACCEPT pterm PROMPT 'Enter a term > '
ACCEPT plineno PROMPT 'Enter a line number > '
-- and similarly for the others.
DECLARE
pterm scores.Term%type := '&pterm';
plineno scores.Lineno%type := '&plineno';
pcompname scores.Compname%type := '&pcompname';
psid scores.sid%type := '&psid';
ppoints scores.points%type := '&ppoints';
BEGIN
score_details(pterm,plineno,pcompname,psid,ppoints);
END;