Question

create or replace procedure p_inout
(v_emp_lname in varchar2(25))
as
v_first_name varchar2(20);
begin
select first_name into v_first_name
from employees
where last_name=v_emp_lname;
dbms_output.put_line(v_first_name);
end;

我到了错误（2,25）：PLS-00103：遇到符号“（”当需要以下之一时：= =。），@％默认字符符号“：=”代替“（”继续。

Answer 1

参数参数的类型（如varchar2）没有大小属性，因此将“varchar2（25）”替换为“varchar2”。

请参阅Oracle docs参数用法。具体做法是：

**Parameter Datatypes**
The datatype of a formal parameter consists of one of the following:

An unconstrained type name, such as NUMBER or VARCHAR2.

A type that is constrained using the %TYPE or %ROWTYPE attributes

Answer 2

To fetch more than more record you have to use cursor. The code above needs some modification to fetch more than one record.

create or replace procedure p_inout
(v_emp_lname in varchar2)
as
v_first_name varchar2(20);
begin
for rec in (select first_name
from employees
where last_name=v_emp_lname)
loop
dbms_output.put_line('First name/s'||' '||rec.first_name);
end loop;
end;

输入姓氏时返回名字的步骤

2 个答案: