Select count result into a variable : Select Into « PL SQL « Oracle PL / SQL






  1. Oracle PL / SQL
  2. PL SQL
  3. Select Into

Select count result into a variable

     
SQL>
SQL>
SQL> CREATE TABLE EMP (EMPNO NUMBER(10) 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>
SQL> declare
  2          l_cnt   number;
  3          empNo number default 1;
  4  begin
  5          select count(*) into l_cnt from emp;
  6
  7          for x in ( select * from emp )
  8          loop
  9                    insert into emp values( empNo, x.ename, x.job, x.mgr, x.hiredate, x.sal,x.comm, x.deptno );
 10                    empNo := empNo+1;
 11          end loop;
 12          commit;
 13  end;
 14  /

PL/SQL procedure successfully completed.

SQL>
SQL> select * from emp;

     EMPNO ENAME      JOB              MGR
---------- ---------- --------- ----------
HIREDATE                    SAL       COMM
-------------------- ---------- ----------
    DEPTNO
----------
      7369 SMITH      CLERK           7902
17-DEC-1980 00:00:00        800
        20

      7499 ALLEN      SALESMAN        7698
20-FEB-1981 00:00:00       1600        300
        30

      7521 WARD       SALESMAN        7698
22-FEB-1981 00:00:00       1250        500
        30

      7566 JONES      MANAGER         7839
02-APR-1981 00:00:00       2975
        20

      7654 MARTIN     SALESMAN        7698
28-SEP-1981 00:00:00       1250       1400
        30

      7698 BLAKE      MANAGER         7839
01-MAY-1981 00:00:00       2850
        30

      7782 CLARK      MANAGER         7839
09-JUN-1981 00:00:00       2450
        10

      7788 SCOTT      ANALYST         7566
09-DEC-1982 00:00:00       3000
        20

      7839 KING       PRESIDENT
17-NOV-1981 00:00:00       5000
        10

      7844 TURNER     SALESMAN        7698
08-SEP-1981 00:00:00       1500          0
        30

      7876 ADAMS      CLERK           7788
12-JAN-1983 00:00:00       1100
        20

      7900 JAMES      CLERK           7698
03-DEC-1981 00:00:00        950
        30

      7902 FORD       ANALYST         7566
03-DEC-1981 00:00:00       3000
        20

      7934 MILLER     CLERK           7782
23-JAN-1982 00:00:00       1300
        10

         1 SMITH      CLERK           7902
17-DEC-1980 00:00:00        800
        20

         2 ALLEN      SALESMAN        7698
20-FEB-1981 00:00:00       1600        300
        30

         3 WARD       SALESMAN        7698
22-FEB-1981 00:00:00       1250        500
        30

         4 JONES      MANAGER         7839
02-APR-1981 00:00:00       2975
        20

         5 MARTIN     SALESMAN        7698
28-SEP-1981 00:00:00       1250       1400
        30

         6 BLAKE      MANAGER         7839
01-MAY-1981 00:00:00       2850
        30

         7 CLARK      MANAGER         7839
09-JUN-1981 00:00:00       2450
        10

         8 SCOTT      ANALYST         7566
09-DEC-1982 00:00:00       3000
        20

         9 KING       PRESIDENT
17-NOV-1981 00:00:00       5000
        10

        10 TURNER     SALESMAN        7698

     EMPNO ENAME      JOB              MGR
---------- ---------- --------- ----------
HIREDATE                    SAL       COMM
-------------------- ---------- ----------
    DEPTNO
----------
08-SEP-1981 00:00:00       1500          0
        30

        11 ADAMS      CLERK           7788
12-JAN-1983 00:00:00       1100
        20

        12 JAMES      CLERK           7698
03-DEC-1981 00:00:00        950
        30

        13 FORD       ANALYST         7566
03-DEC-1981 00:00:00       3000
        20

        14 MILLER     CLERK           7782
23-JAN-1982 00:00:00       1300
        10


28 rows selected.

SQL>
SQL> drop table emp;

Table dropped.

SQL>
SQL>
SQL> --








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