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43. Try to label your EXIT WHEN statements.
Example:
-- Good
BEGIN
END;
l_outerlp := 0;
LOOP
l_innerlp := 0;
l_outerlp := NVL(l_outerlp,0) + 1;
LOOP
l_innerlp := NVL(l_innerlp,0) + 1;
DBMS_OUTPUT.PUT_LINE('Outer Loop counter is ' || l_outerlp ||
EXIT outerloop WHEN l_innerlp = 3;
END LOOP innerloop;
END LOOP outerloop;
' Inner Loop counter is ' || l_innerlp);
44. Do not use a cursor for loop to check whether a cursor returns data.
Example:
-- Bad
DECLARE
l_employee_found BOOLEAN := FALSE;
…
BEGIN
END;
FOR r_employee IN c_employee
LOOP
l_employee_found := TRUE;
END LOOP check_employees;
-- Good
DECLARE
l_employee_found BOOLEAN := FALSE;
…
BEGIN
OPEN c_employee;
FETCH c_employee INTO r_employee;
l_employee_found := c_employee%FOUND;
CLOSE c_emplyoee;
END;
PL/SQL Coding Guidelines 33