Oracle PL/SQL/Stored Procedure Function/exec

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Exec: execute a procedure

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SQL> SQL> set serverout on; SQL> SQL> -- Displaying "Hello World!" to the screen. SQL> SQL> CREATE OR REPLACE PROCEDURE HELLO AS 

 2       BEGIN
 3            DBMS_OUTPUT.PUT_LINE("Hello World! " ||
 4                 TO_CHAR(SYSDATE,"MM-DD-YY HH:MI:SS AM"));
 5       END;
 6  /

SQL> SQL> exec HELLO(); Hello World! 09-09-06 07:23:06 PM SQL> 

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Procedure without parameters

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SQL> SQL> CREATE or replace PROCEDURE my_first_proc IS 

 2          greetings VARCHAR2(20);
 3  BEGIN
 4          greetings := "Hello World";
 5          dbms_output.put_line(greetings);
 6  END my_first_proc;
 7  /

Procedure created. SQL> SQL> SQL> set serveroutput on SQL> EXECUTE my_first_proc; Hello World PL/SQL procedure successfully completed. SQL> SQL> BEGIN 

 2          my_first_proc;
 3  END;
 4  /

Hello World PL/SQL procedure successfully completed. SQL> SQL> 

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Use EXEC to execute a Stored Procedure

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SQL> 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 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

    EMPNO ENAME      JOB              MGR
---------- --------- ----------

HIREDATE SAL COMM

---------- ---------- 
   DEPTNO

     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

14 rows selected. SQL> SQL> CREATE OR REPLACE PROCEDURE emp_change_s (i_emp_id IN integer) 

 2  AS BEGIN
 3  UPDATE emp
 4  set ename = "S"
 5  WHERE empno =  i_emp_id;
 6  END emp_change_s;
 7  /

Procedure created. SQL> show error No errors. SQL> SQL> exec emp_change_s(7369); PL/SQL procedure successfully completed. SQL> SQL> SQL> drop table emp; Table dropped. SQL> SQL> -- 

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