Unable to find in oracle cursor update that how many records are updated? - plsql

Question

Scenario:
Write a PL/SQL block that takes a department number from a user and increases the salary of all the employees belonging to the department by 10%. The block should display on the screen how many records are updated.
My Program:
DECLARE
V_TOT_ROWS NUMBER(3);
CURSOR emp_cursor IS
SELECT EMPSAL FROM emp WHERE deptno=&DEPT_NO
FOR UPDATE OF EMPSAL NOWAIT;
BEGIN
FOR emp_record IN emp_cursor
LOOP
UPDATE emp
SET EMPSAL=EMPSAL+emp_record.EMPSAL*0.1
WHERE CURRENT OF emp_cursor;
-- V_TOT_ROWS := SQL%ROWCOUNT;
-- DBMS_OUTPUT.PUT_LINE('TOTAL UPDATED RECORDS: ' || V_TOT_ROWS);
DBMS_OUTPUT.PUT_LINE('Updated ' || SQL%ROWCOUNT || ' salaries.');
END LOOP;
COMMIT;
-- DBMS_OUTPUT.PUT_LINE('Updated ' || SQL%ROWCOUNT || ' salaries.');
END;
It is giving 1 row updated every time the loop is executed but if I keep the dbms_output outside the loop, it gives 0.
Please help.
Thanks,

Answer 1

Please check below Script:
declare V_TOT_ROWS NUMBER(3) :=0;
CURSOR emp_cursor IS
SELECT EMPSAL FROM emp WHERE deptno=&DEPT_NO
FOR UPDATE OF EMPSAL NOWAIT;
begin FOR emp_record IN emp_cursor
LOOP
UPDATE emp
SET EMPSAL=EMPSAL+emp_record.EMPSAL*0.1
WHERE CURRENT OF emp_cursor;
V_TOT_ROWS := V_TOT_ROWS+SQL%ROWCOUNT;
-- DBMS_OUTPUT.PUT_LINE('TOTAL UPDATED RECORDS: ' || V_TOT_ROWS);
-- DBMS_OUTPUT.PUT_LINE('Updated ' || SQL%ROWCOUNT || ' salaries.');
END LOOP;
COMMIT;
DBMS_OUTPUT.PUT_LINE('Updated ' || V_TOT_ROWS || ' salaries.'); end;

Answer 2

Use simple update instead of a cursor + forall.
If you use FORALL ... UPDATE, then only 1 record is updated in each loop cycle, so UPDATE returns SQL%ROWCOUNT always = 1.
DECLARE
V_TOT_ROWS NUMBER(3);
BEGIN
UPDATE emp
SET EMPSAL= EMPSAL+ EMPSAL*0.1
WHERE deptno=&DEPT_NO;
V_TOT_ROWS := SQL%ROWCOUNT;
DBMS_OUTPUT.PUT_LINE('TOTAL UPDATED RECORDS: ' || V_TOT_ROWS);
COMMIT;
END;
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