Oracle PL/SQL reference variable

a grammar

my_name emp.ename%type;

Indicates that the data type of my_name is consistent with the data type of the ename field in the emp table.

 

two code

1. --引用型变量
2. set serverout on
3. declare
4. --定义引用型变量：查询并打印7839的姓名和薪水
5. --pname varchar2(20);
6. --psal number;
7. pname emp.ename%type;
8. psal emp.sal%type;
9. begin
10. --得到7839的姓名和薪水
11. select ename,sal into pname,psal from emp where EMPNO =7839;
12. --打印姓名和薪水
13. DBMS_OUTPUT.put_line(pname||'的薪水是'||psal);
14. end;
15. /

 

Three running results

King's salary is 5000

 

PL/SQL procedure completed successfully.