How to access different columns of a different tables using cursor after a join has been made on a particular column name in the tables - oracle

Question

So I am having issues in understanding how can one access different column names using a cursor in which a join operation has been made on three different tables over a single common column.
For example
DECLARE
CURSOR joined_table_cur IS
SELECT a.col1, a.col2, b.col5, c.col7 ...
FROM table1 a
JOIN table2 b ON a.col1 = b.col1 JOIN
table3 c on b.col1 = c.col1
;
joined_table_rec joined_table_cur%ROWTYPE;
BEGIN
FOR joined_table_rec IN joined_table_cur
LOOP
-- how to access col7 from table3 ie c in this cursor--
END LOOP;
END;
I am unable to understand how to do this.

Answer 1

This is not an answer. d r has answered your question and explained the two options how to access your cursor.
I just want to add that you don't need an explicit cursor at all. What I usually do is just this:
BEGIN
FOR rec IN
(
SELECT a.col1, a.col2, b.col5, c.col7 ...
FROM table1 a
JOIN table2 b ON a.col1 = b.col1
JOIN table3 c ON b.col1 = c.col1
)
LOOP
DBMS_OUTPUT.PUT_LINE('table1.col1 is ' || rec.col1);
DBMS_OUTPUT.PUT_LINE('table2.col5 is ' || rec.col5);
...
END LOOP;
END;
Consider this a comment to dr's answer. I am merely posting this here as an "answer", because without line breaks it would be hard to read as a comment.

Answer 2

To loop through cursor rows in your sample all you should do is to use second type of looping in code below and reference the columns using already declared variable joined_table_rec - for col1 it is joined_table_rec.col1, for col2 joined_table_rec.col2 ... and so on.
If you want to use FOR LOOP then you don't need to declare joined_table_rec variable as the for loop would create the variable itself - just give the name - rec2 in code below.
Below is example for two ways how to loop the cursor:
SET SERVEROUTPUT ON
DECLARE
CURSOR cur IS
SELECT *
FROM
(
Select 1 "COL_ID", 'Name 1' "COL_NAME", 'Somethong else 1' "COL_ELSE" From Dual Union All
Select 2 "COL_ID", 'Name 2' "COL_NAME", 'Somethong else 2' "COL_ELSE" From Dual Union All
Select 3 "COL_ID", 'Name 3' "COL_NAME", 'Somethong else 3' "COL_ELSE" From Dual
);
rec cur%ROWTYPE;
m_sql VarChar2(500);
BEGIN
FOR rec2 IN cur LOOP
DBMS_OUTPUT.PUT_LINE(rec2.COL_ID);
END LOOP;
OPEN cur;
LOOP
FETCH cur Into rec;
EXIT WHEN cur%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(rec.COL_NAME);
END LOOP;
CLOSE cur;
END;
Result:
anonymous block completed
1
2
3
Name 1
Name 2
Name 3
More about it here.