the employee table except for the employee number. This function accepts all arguments for the fields in
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Mgr NUMBER, Hiredate DATE, Sal NUMBER, Comm NUMBER, The body for this package defines the function and the procedures: CREATE PACKAGE BODY Employee_management ASįUNCTION Hire_emp (Name VARCHAR2, Job VARCHAR2, The package contains one stored function and two stored procedures. The following example shows a package specification for a package named Employee_management. No quota controls the amount of space available to a user who creates procedures and packages.Įxample of a PL/SQL Package Specification and Body Furthermore, all procedures and packages are stored in the data dictionary (in the SYSTEM tablespace). This allows for more disciplined and efficient security strategies with database applications and their users. Therefore, users never need to be granted the privileges to the objects referenced by a procedure. Privileged users run the procedure under the security domain of the owner of the procedure. The EXECUTE privilege on a procedure gives a user the right to run a procedure owned by another user. If a necessary privilege to a referenced object is revoked from the owner of the procedure or package, then the procedure cannot be run. If the privileges of the owner of a procedure or package change, then the procedure must be reauthenticated before it is run. The owner cannot obtain required privileges through roles. The owner of the procedure or package must be explicitly granted the necessary object privileges for all objects referenced within the body of the code. To create without errors (to compile the procedure or package successfully) requires the following additional privileges:
#Oracle pl sql execute procedure example code
This is not part of the code it just activates the loading of the procedure. Note the slash (/) at the end of the code. Then, using an interactive tool such as SQL*Plus, load the text file containing the procedure by entering the following statement: SQL> loads the procedure into the current schema from the get_emp. SELECT Empno, Ename, Job, Mgr, Hiredate, Sal, Comm, Deptno sql containing the following code: CREATE PROCEDURE Get_emp_rec (Emp_number IN Emp_tab.Empno%TYPE, įor example, to use the example in "%TYPE and %ROWTYPE Attributes ", create a text (source) file called get_emp. At the beginning of the procedure, place the following statement: CREATE PROCEDURE Procedure_name AS. Use a text editor to write the procedure or function. The following example defines the Get_emp_rec procedure, which returns all the columns of the Emp_tab table in a PL/SQL record for the given empno:
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Use the %ROWTYPE attribute to create a record that contains all the columns of the specified table. PROCEDURE Get_emp_names(Dept_num IN Dept_number%TYPE)
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If the Get_emp_names procedure is part of a package, then you can use previously-declared public (package) variables to constrain a parameter datatype. Using %TYPE is recommended, because if the type of the column in the table changes, then it is not necessary to change the application code. The column and table must be available when a declaration using %TYPE (or %ROWTYPE) is elaborated. This has the Dept_num parameter take the same datatype as the Deptno column in the Emp_tab table. For example, the Get_emp_names procedure specification in "Parameters for Procedures and Functions" could be written as the following: PROCEDURE Get_emp_names(Dept_num IN Emp_tab.Deptno%TYPE) Use the type attributes %TYPE and %ROWTYPE to constrain the parameter. They are usually used to call stored procedures or to open cursor variables.
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IF Emp_number > 9999 OR Emp_number < 1000 THENĭBMS_OUTPUT.PUT_LINE('Employee number ' || Emp_number ||Īnonymous blocks are usually used interactively from a tool, such as SQL*Plus, or in a precompiler, OCI, or SQL*Module application. You can also define your own exceptions, declare them in the declaration part of a block, and define them in the exception part of the block. WHERE Empno = Emp_number - no such numberĭBMS_OUTPUT.PUT_LINE('Employee name is ' || Emp_name) ĭBMS_OUTPUT.PUT_LINE('No such employee: ' || Emp_number) The following anonymous block handles the predefined Oracle Database exception NO_DATA_FOUND (which would result in an ORA-01403 error if not handled): DECLARE This allows your application to prevent the server from issuing an error that could cause the client application to end. Also, end the example with a slash (/) to activate it.Įxceptions let you handle Oracle Database error conditions within PL/SQL program logic. If you test this block using SQL*Plus, then enter the statement SET SERVEROUTPUT ON so that output using the DBMS_OUTPUT procedures (for example, PUT_LINE) is activated.