Oracle PL/SQL - Looping through a Cursor by Using a CURSOR FOR Loop

Description

Looping through a Cursor by Using a CURSOR FOR Loop

Demo

SQL>
SQL> drop table emp;

Table dropped.--   ww  w  . j a  v  a  2s  .  co  m

Elapsed: 00:00:00.02
SQL> create table emp(
  2    empno    number(4,0),
  3    ename    varchar2(10),
  4    job      varchar2(9),
  5    mgr      number(4,0),
  6    hiredate date,
  7    sal      number(7,2),
  8    comm     number(7,2),
  9    deptno   number(2,0)
 10  );

Table created.

Elapsed: 00:00:00.02
SQL>
SQL> insert into emp values(7839, 'KING', 'PRESIDENT', null, to_date('17-11-1981','dd-mm-yyyy'), 5000, null, 10);
SQL> insert into emp values(7698, 'BLAKE', 'MANAGER', 7839,to_date('1-5-1981','dd-mm-yyyy'), 2850, null, 30);
SQL> insert into emp values(7782, 'CLARK', 'MANAGER', 7839,to_date('9-6-1981','dd-mm-yyyy'), 2450, null, 10);
SQL> insert into emp values(7566, 'JONES', 'MANAGER', 7839,to_date('2-4-1981','dd-mm-yyyy'), 2975, null, 20);
SQL>
SQL>
SQL> declare
  2       cursor c_emp (ci_deptNo NUMBER) is
  3          select *
  4            from emp
  5            where deptNo = ci_deptNo;
  6  begin
  7       for r_emp in c_emp(10) loop
  8            update emp
  9            set sal=sal*1.5
 10            where empNo = r_emp.empNo;
 11            DBMS_OUTPUT.put_line('Emp '|| r_emp.eName||' - salary change:'||r_emp.sal||'->'||r_emp.sal*1.5);
 12       end loop;
 13  end;
 14  /
Emp KING - salary change:5000->7500
Emp CLARK - salary change:2450->3675

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.02
SQL>

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