Question

我正在尝试SELECT INTO我创建的标量变量，我在编译时遇到错误：

create or replace PROCEDURE NEW_COURSE
(
    c_course_ID      COURSE.COURSEID%type,
    c_dept_ID         COURSE.DEPTID%type,
    c_coursename    COURSE.COURSENAME%type,
    c_textbook         COURSE.TEXTBOOK%type,
    c_credithour       COURSE.CREDITHOUR%type,
    c_max_enrol       COURSE.MAX_ENROL%type,
    c_actual_enrol    COURSE.ACTUAL_ENROL%type,
    c_availability      COURSE.AVAILABILITY%type,
    p_prerequisite_ID  HAS_PREREQUISITE.PREREQUISITEID%type,
)

AS

BEGIN
DECLARE  l_prerequisite_course VARCHAR2(10);
select c.courseid into l_prerequisite_course
from course c 
where c.courseid = p_prerequisite_id;

IF substr(l_prerequisite_course, 1, 4) = substr(p_prerequisite_id, 1, 4)
OR substr(l_prerequisite_course, 5, 1) < substr(p_prerequisite_id, 5, 1)
THEN 
      INSERT INTO COURSE (COURSEID, DEPTID, COURSENAME, TEXTBOOK, CREDITHOUR, MAX_ENROL, ACTUAL_ENROL, AVAILABILITY)
      VALUES (c_course_ID, c_dept_ID, c_coursename, c_textbook, c_credithour, c_max_enrol, c_actual_enrol, c_availability);
ELSE RAISE NO_DATA_FOUND;
END IF;

EXCEPTION
WHEN NO_DATA_FOUND THEN
    dbms_output.put_line('Please enter a valid prerequisite!');


END NEW_COURSE;

发生错误：

错误（20,1）：PLS-00103：期待时遇到符号“SELECT” 以下之一：begin function pragma procedure子类型当前
之前存在游标删除

Answer 1

变量声明在begin：

之前

create or replace PROCEDURE NEW_COURSE (
    c_course_ID      COURSE.COURSEID%type,
    c_dept_ID         COURSE.DEPTID%type,
    c_coursename    COURSE.COURSENAME%type,
    c_textbook         COURSE.TEXTBOOK%type,
    c_credithour       COURSE.CREDITHOUR%type,
    c_max_enrol       COURSE.MAX_ENROL%type,
    c_actual_enrol    COURSE.ACTUAL_ENROL%type,
    c_availability      COURSE.AVAILABILITY%type,
    p_prerequisite_ID  HAS_PREREQUISITE.PREREQUISITEID%type,
) as
    l_prerequisite_course VARCHAR2(10);
begin
    select c.courseid into l_prerequisite_course
    from course c 
    where c.courseid = p_prerequisite_id;
. . . .

SQL过程 - SELECT INTO问题

1 个答案: