无法调用存储过程错误代码 1305答案

【问题标题】：Cannot call Stored procedure Error code 1305无法调用存储过程错误代码 1305
【发布时间】：2019-10-19 12:05:01
【问题描述】：

数据库是关于考试安排的，这是关于在给定日期安排课程的主要存储过程。我创建了该过程，但是当我尝试调用它时说找不到该过程。

我查看了代码但找不到语法错误，程序本身没有编译错误，（但那可能是因为我必须使用分隔符？）

DELIMITER $$

CREATE PROCEDURE schedule_course(IN in_code CHAR(3), IN in_date DATE)
BEGIN
DECLARE complete BOOLEAN DEFAULT FALSE;
DECLARE module_code CHAR(3);
DECLARE module_c CURSOR FOR
SELECT course_code FROM module WHERE course_code = in_code;
DECLARE CONTINUE HANDLER FOR NOT FOUND
SET complete = TRUE;

IF (DAYOFWEEK(in_date) = 6 OR 7) THEN
SIGNAL SQLSTATE '45000'
SET MESSAGE TEXT = 'Cannot schedule start date on a weekend'
END IF;

OPEN module_c;

mainloop : LOOP
FETCH NEXT FROM module_c INTO module_code;

IF complete THEN
SIGNAL SQLSTATE '45000'
SET MESSAGE TEXT = 'Something something'
END IF;

INSERT INTO SESSION (`code`, `date`, room)
VALUES
(module_code, in_date, NULL)

LEAVE mainloop;
END LOOP;
DELIMITER ;

CALL schedule_course(WSD, CURDATE())

错误代码：1305。PROCEDURE cameron.schedule_course 不存在

【问题讨论】：

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'MESSAGE TEXT = 'Cannot schedule start date on a weekend'
您的程序中有多个语法错误 - 所以它不应该编译。

标签： mysql database stored-procedures

【解决方案1】：

Mysql 8 显示很多错误。我纠正了他们，逻辑是合理的，但你当然要检查它，

DELIMITER $$
CREATE DEFINER=`root`@`localhost`  PROCEDURE schedule_course(IN in_code CHAR(3), IN in_date DATE)
BEGIN
  DECLARE complete BOOLEAN DEFAULT FALSE;
  DECLARE module_code CHAR(3);
  DECLARE module_c CURSOR FOR
  SELECT course_code FROM module WHERE course_code = in_code;
  DECLARE CONTINUE HANDLER FOR NOT FOUND
   SET complete = TRUE;

  IF (DAYOFWEEK(in_date) = 6 OR DAYOFWEEK(in_date) = 7) THEN
    SIGNAL SQLSTATE '45000'
      SET MESSAGE_TEXT = 'Cannot schedule start date on a weekend';
  END IF;

  OPEN module_c;

  mainloop : LOOP
    FETCH NEXT FROM module_c INTO module_code;

    IF complete THEN
      SIGNAL SQLSTATE '45000'
        SET MESSAGE_TEXT = 'Something something';
    END IF;

   INSERT INTO SESSION (`code`, `date`, room)
   VALUES
    (module_code, in_date, NULL);

  LEAVE mainloop;
  END LOOP;
  CLOSE module_c;
END;
DELIMITER ;

【讨论】：

【解决方案2】：

看来你还没有结束（END $$）

DELIMITER $$

CREATE PROCEDURE schedule_course(IN in_code CHAR(3), IN in_date DATE)
BEGIN
DECLARE complete BOOLEAN DEFAULT FALSE;
DECLARE module_code CHAR(3);
DECLARE module_c CURSOR FOR
SELECT course_code FROM module WHERE course_code = in_code;
DECLARE CONTINUE HANDLER FOR NOT FOUND
SET complete = TRUE;

IF (DAYOFWEEK(in_date) = 6 OR 7) THEN
SIGNAL SQLSTATE '45000'
SET MESSAGE TEXT = 'Cannot schedule start date on a weekend'
END IF;

OPEN module_c;

mainloop : LOOP
FETCH NEXT FROM module_c INTO module_code;

IF complete THEN
SIGNAL SQLSTATE '45000'
SET MESSAGE TEXT = 'Something something'
END IF;

INSERT INTO SESSION (`code`, `date`, room)
VALUES
(module_code, in_date, NULL)

LEAVE mainloop;
END LOOP;

END $$

DELIMITER ;

【讨论】：