Getting error while creating PL SQL function - plsql

Question

Question is :
Create a Function named 'credit_limit' which takes shipment entity id(i.e, entity_id) as input and returns the limit_status of type varchar.
Function name : credit_limit
Input Parameter : entity_id in int
Output variable : limit_status variable of type varchar
Design rules:
1. If the credit_limit of the given entity id is greater then 50000,then display the limit_status as 'Credit limit is greater than 50000'
2. If the credit_limit of the given entity id is less then 50000,then display the limit_status as 'Credit limit is less than 50000'
Note: DO NOT CHANGE the given status message in your solution.
create or replace function credit_limit (entity_id in integer)
return varchar
is
c_credit_limit NUMBER(*,2);
limit_status varchar(255);
begin
select credit_limit into c_credit_limit from shipment_entity
where id = entity_id;
return(c_credit_limit);
if c_credit_limit > 50000 then
limit_status := 'Credit limit is greater than 50000';
else
if c_credit_limit < 50000 then
limit_status := 'Credit limit is less than 50000';
end if;
return (limit_status);
end;
/
I entered the code received an error
Warning: Function created with compilation errors.
please help me out.

Answer 1

You get issue because of 2 reasons:
1) You can return only once from a Function. You used it multiple times.
2) END IF is missing in one of the IF-ENDIF block.
Modifed code is:
CREATE OR REPLACE FUNCTION credit_limit (entity_id IN INTEGER)
RETURN VARCHAR2
IS
c_credit_limit NUMBER (5, 2);
limit_status VARCHAR (255);
BEGIN
SELECT credit_limit
INTO c_credit_limit
FROM shipment_entity
WHERE id = entity_id;
IF c_credit_limit > 50000
THEN
limit_status := 'Credit limit is greater than 50000';
ELSE
IF c_credit_limit < 50000
THEN
limit_status := 'Credit limit is less than 50000';
END IF;
END IF;
RETURN (c_credit_limit);
END;
/