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--表主体:
- SQL> SELECT * FROM emp_pl;
- EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
- ----- ---------- --------- ----- ----------- --------- --------- ------
- 7369 SMITH CLERK 7902 1980/12/17 1000.00 20
- 7499 ALLEN SALESMAN 7698 1981/2/20 1600.00 300.00 30
- 7521 WARD SALESMAN 7698 1981/2/22 1250.00 500.00 30
- 7566 JONES MANAGER 7839 1981/4/2 2975.00 20
- 7654 MARTIN SALESMAN 7698 1981/9/28 1250.00 1400.00 30
- 7698 BLAKE MANAGER 7839 1981/5/1 2850.00 30
- 7782 CLARK MANAGER 7839 1981/6/9 2450.00 10
- 7788 SCOTT ANALYST 7566 1987/4/19 3000.00 20
- 7839 KING PRESIDENT 1981/11/17 5000.00 10
- 7844 TURNER SALESMAN 7698 1981/9/8 1500.00 0.00 30
- 7876 ADAMS CLERK 7788 1987/5/23 1100.00 20
- 7900 JAMES CLERK 7698 1981/12/3 950.00 30
- 7902 FORD ANALYST 7566 1981/12/3 3000.00 20
- 7934 MILLER CLERK 7782 1982/1/23 1300.00 10
--函数主体:
- create or replace function get_sal
- (v_id IN emp_pl.empno%TYPE)
- return number
- is
- v_salary emp_pl.sal%TYPE :=0;
- begin
- SELECT sal INTO v_salary
- FROM emp_pl
- WHERE empno=v_id;
- RETURN v_salary;
- end get_sal;
--方法1.PLSQL代码块
- SQL> set serveroutput on
- SQL> declare
- 2 v_sal emp_pl.sal%type;
- 3 begin
- 4 v_sal :=get_sal(7902);
- 5 dbms_output.put_line('7902的工资是'||v_sal);
- 6 END;
- 7 /
--方法2.execute
- SQL> variable g_salary number 或 (var g_salary number )
- SQL> execute :g_salary :=get_sal(7902) --不用分号
--方法3.call
- SQL> var get_salary1 number
- SQL> call get_sal(7902) into :get_salary1; --需要用分号
- --variable同var
--方法4.select
SQL> select get_sal(7902) from dual;
--方法5.将函数作为另一个子程序的参数
SQL> execute dbms_output.put_line(get_sal(7902));
来自 https://blog.csdn.net/qq_30934019/article/details/80557576