Question

Have to write a function which returns the sum of all the square between 2 user input numbers. Here is what i have written but cant seem to make it work.
E.g. sumAll(2, 5) must give the result 54
. 

CREATE OR REPLACE FUNCTION SumAll(integer,integer) RETURNS integer as $$
DECLARE
    num1 ALIAS for $1;
    num2 ALIAS for $2;
    ret_sum integer;
    sum1 integer;
BEGIN

    for i in num1..num2 LOOP
        sum1:=i*i;
        ret_sum=ret_sum+sum1;
    END LOOP;
    return ret_sum;
END
$$ language 'plpgsql';

it doesnt work.
what am i doing wrong?

Answer 1

You’ve forgot to initialize one variable, add ret_sum:=0; before for-loop.