Как исправить 'Обнаружен символ "=" при ожидании одного из следующих:' Ошибка в plsql

Question

Я пытаюсь получить результаты из таблицы, используя процедуру PL / SQL

это процедура

CREATE OR REPLACE PROCEDURE getEmpById(
       e_id IN employee.empid%TYPE,
       emp_name OUT employee.empname%TYPE,
       emp_desig OUT  employee.designation%TYPE)
IS
BEGIN
  SELECT empname,designation INTO emp_name, emp_desig FROM employee WHERE empid = e_id;
END;
/

и это вызывающий блок

DECLARE
   e_id:=&e_id;
   emp_name employee.empname%TYPE;
   emp_desig employee.designation%TYPE;
BEGIN
   getEmpById(e_id,emp_name,emp_desig);
   DBMS_OUTPUT.PUT_LINE('Name :  ' || emp_name);
   DBMS_OUTPUT.PUT_LINE('Designation :  ' || emp_desig);   
END;
/

и это ошибка, которую я получаю

Enter value for e_id: 'AIT005'
old   2:    e_id:=&e_id;
new   2:    e_id:='AIT005';
   e_id:='AIT005';
       *
ERROR at line 2:
ORA-06550: line 2, column 8:
PLS-00103: Encountered the symbol "=" when expecting one of the following:
constant exception <an identifier>
<a double-quoted delimited-identifier> table LONG_ double ref
char time timestamp interval date binary national character
nchar
The symbol "<an identifier>" was substituted for "=" to continue.

Answer 1

Вам не хватает типа данных E_ID (в разделе DECLARE).

Вот пример:

SQL> create table employee (empid number, empname varchar2(10), designation varchar2(10));

Table created.

SQL> insert into employee values (1, 'Little', 'Foot');

1 row created.

SQL> create or replace procedure getempbyid(
  2         e_id in employee.empid%type,
  3         emp_name out employee.empname%type,
  4         emp_desig out  employee.designation%type)
  5  is
  6  begin
  7    select empname,designation into emp_name, emp_desig from employee where empid = e_id;
  8  end;
  9  /

Procedure created.

Тестирование:

SQL> set serveroutput on
SQL> set ver off
SQL> declare
  2     e_id employee.empid%type := &e_id;     --> you're missing E_ID datatype here
  3     emp_name employee.empname%type;
  4     emp_desig employee.designation%type;
  5  begin
  6     getempbyid(e_id,emp_name,emp_desig);
  7     dbms_output.put_line('Name :  ' || emp_name);
  8     dbms_output.put_line('Designation :  ' || emp_desig);
  9  end;
 10  /
Enter value for e_id: 1
Name :  Little
Designation :  Foot

PL/SQL procedure successfully completed.

SQL>