CREATE OR REPLACE PROCEDURE
find_emp(emp_no NUMBER)
AS
empname VARCHAR2(20);
BEGIN
SELECT ename INTO empname
FROM EMP WHERE empno = emp_no;
DBMS_OUTPUT.PUT_LINE('雇员姓名是 '|| empname);
EXCEPTION
WHEN NO_DATA_FOUND THEN
DBMS_OUTPUT.PUT_LINE ('雇员编号未找到');
END find_emp;