Open a cursor based on the result of row_number over partition by, order by : Cursor Open « Cursor « Oracle PL / SQL






Open a cursor based on the result of row_number over partition by, order by

 
SQL>
SQL> CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
  2                    ENAME VARCHAR2(10),
  3                    JOB VARCHAR2(9),
  4                    MGR NUMBER(4),
  5                    HIREDATE DATE,
  6                    SAL NUMBER(7, 2),
  7                    COMM NUMBER(7, 2),
  8                    DEPTNO NUMBER(2));

Table created.

SQL>
SQL> INSERT INTO EMP VALUES (7369, 'SMITH', 'CLERK',    7902, TO_DATE('17-DEC-1980', 'DD-MON-YYYY'), 800, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7499, 'ALLEN', 'SALESMAN', 7698, TO_DATE('20-FEB-1981', 'DD-MON-YYYY'), 1600, 300, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7521, 'WARD',  'SALESMAN', 7698, TO_DATE('22-FEB-1981', 'DD-MON-YYYY'), 1250, 500, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7566, 'JONES', 'MANAGER',  7839, TO_DATE('2-APR-1981',  'DD-MON-YYYY'), 2975, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7654, 'MARTIN', 'SALESMAN', 7698,TO_DATE('28-SEP-1981', 'DD-MON-YYYY'), 1250, 1400, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7698, 'BLAKE', 'MANAGER', 7839,TO_DATE('1-MAY-1981', 'DD-MON-YYYY'), 2850, NULL, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7782, 'CLARK', 'MANAGER', 7839,TO_DATE('9-JUN-1981', 'DD-MON-YYYY'), 2450, NULL, 10);

1 row created.

SQL> INSERT INTO EMP VALUES (7788, 'SCOTT', 'ANALYST', 7566,TO_DATE('09-DEC-1982', 'DD-MON-YYYY'), 3000, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7839, 'KING', 'PRESIDENT', NULL,TO_DATE('17-NOV-1981', 'DD-MON-YYYY'), 5000, NULL, 10);

1 row created.

SQL> INSERT INTO EMP VALUES (7844, 'TURNER', 'SALESMAN', 7698,TO_DATE('8-SEP-1981', 'DD-MON-YYYY'), 1500, 0, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7876, 'ADAMS', 'CLERK', 7788,TO_DATE('12-JAN-1983', 'DD-MON-YYYY'), 1100, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7900, 'JAMES', 'CLERK', 7698,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 950, NULL, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7902, 'FORD', 'ANALYST', 7566,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 3000, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7934, 'MILLER', 'CLERK', 7782,TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10);

1 row created.

SQL>
SQL> select * from emp;

   EMPNO ENAME      JOB            MGR HIREDATE       SAL     COMM DEPTNO
-------- ---------- --------- -------- --------- -------- -------- ------
 7369.00 SMITH      CLERK      7902.00 17-DEC-80   800.00              20

 7499.00 ALLEN      SALESMAN   7698.00 20-FEB-81  1600.00   300.00     30
 7521.00 WARD       SALESMAN   7698.00 22-FEB-81  1250.00   500.00

 7566.00 JONES      MANAGER    7839.00 02-APR-81  2975.00              20

 7654.00 MARTIN     SALESMAN   7698.00 28-SEP-81  1250.00  1400.00     30
 7698.00 BLAKE      MANAGER    7839.00 01-MAY-81  2850.00

 7782.00 CLARK      MANAGER    7839.00 09-JUN-81  2450.00              10

   EMPNO ENAME      JOB            MGR HIREDATE       SAL     COMM DEPTNO
-------- ---------- --------- -------- --------- -------- -------- ------

 7788.00 SCOTT      ANALYST    7566.00 09-DEC-82  3000.00              20

 7839.00 KING       PRESIDENT          17-NOV-81  5000.00              10

 7844.00 TURNER     SALESMAN   7698.00 08-SEP-81  1500.00      .00     30

 7876.00 ADAMS      CLERK      7788.00 12-JAN-83  1100.00              20

 7900.00 JAMES      CLERK      7698.00 03-DEC-81   950.00              30


   EMPNO ENAME      JOB            MGR HIREDATE       SAL     COMM DEPTNO
-------- ---------- --------- -------- --------- -------- -------- ------
 7902.00 FORD       ANALYST    7566.00 03-DEC-81  3000.00              20

 7934.00 MILLER     CLERK      7782.00 23-JAN-82  1300.00              10


14 rows selected.

SQL> begin
  2      open :x for
  3      'select mgr,
  4              ename,
  5              row_number() over ( partition by mgr
  6                                  order by ename ) rn
  7         from emp';
  8  end;
  9  /

PL/SQL procedure successfully completed.


     MGR ENAME            RN
-------- ---------- --------
 7566.00 FORD           1.00
 7566.00 SCOTT          2.00
 7698.00 ALLEN          1.00
 7698.00 JAMES          2.00
 7698.00 MARTIN         3.00
 7698.00 TURNER         4.00
 7698.00 WARD           5.00
 7782.00 MILLER         1.00
 7788.00 ADAMS          1.00
 7839.00 BLAKE          1.00
 7839.00 CLARK          2.00

     MGR ENAME            RN
-------- ---------- --------
 7839.00 JONES          3.00
 7902.00 SMITH          1.00
         KING           1.00

14 rows selected.

SQL>
SQL> drop table emp;

Table dropped.

 








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