ORACLE Stored Procedure

Source: Internet
Author: User

ORACLE Stored Procedure

Prelude: 1: A Necessary concept: ORACLE provides the ability to store PL/SQL programs in databases and run them anywhere. In this way, stored procedures or functions are called. Procedures and functions are collectively referred to as PL/SQL subprograms. They are named PL/SQL blocks and are stored in the database, and exchange information with the caller through input/output parameters or input/output parameters. The only difference between a process and a function is that a function always returns data to the caller, while a process does not return data. 2: Create a stored procedure create a stored procedure on the oracle server. It can be called by multiple applications. You can pass parameters to the stored procedure, or send parameters to the stored procedure. Syntax: CREATE [or replace] PROCEDURE Procedure_name [(argment [{IN | in out}] Type, argment [{IN | OUT | in out}] Type] [authid definer | CURRENT_USER] {IS | AS} <Type. description of variables> BEGIN <execution part> EXCEPTION <optional EXCEPTION error handling program> END; 3: Example: -- Define a stored procedure, obtain the total salary of a given department (using the out parameter). The Department number and total salary must be defined as the parameter create or replace procedure get_sal3 (dept_id number, sum_salar Y out number) iscursor salary_cursor is select salaryfrom employees where department_id = dept_id; beginsum_salary: = 0; for c in salary_cursor loop sum_salary: = sum_salary + c. salary; end loop; dbms_output.put_line (sum_salary); end; select get_sal3 (60,) -- perform a salary increase operation on employees in a given department (? -95) during the period, raise the salary by 5% -- (3%) raise the salary by 1%, (98, now) raise the salary by. The following result is returned: -- How much extra the company pays each month for this salary increase (define an out-type output parameter) create or replace procedure get_money (dept_id number, temp_sal out number) isv_ I number (): = 0; cursor salary_cursor is select employee_id, salary, hire_datefrom employees where department_id = dept_id; begintemp_sal: = 0; for c in salary_cursor loop if to_char (c. hire_date, 'yyyy') <'000000' then v_ I: = 1995; elsif to_char (c. hire_date, 'yyyy') <'000000' then v_ I: = 1998; else v_ I: = 0.03; end if; -- update salary update employees set salary = salary * (1 + v_ I) where employee_id = c. employee_id; -- calculate the cost temp_sal: = temp_sal + c. salary * v_ I; end loop; dbms_output.put_line (temp_sal); end; 4: Call the stored procedure: declare v_temp number (10): = 0; beginget_money (80, v_temp); end;

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.