Question

我正在为MySQL服务器执行以下SQL脚本。它是创建一个接受课程代码和开始日期作为参数的SPROC，然后在连续的工作日为每个模块添加会话。

    DELIMITER $$
CREATE PROCEDURE Assign_Schedule (IN course_code CHAR(3),IN start_date DATE)
BEGIN
        DECLARE module_code CHAR(2);
        DECLARE day_count TINYINT;
        DECLARE new_date DATE;  
        DECLARE finished BOOLEAN;

        DECLARE mod_cursor CURSOR FOR SELECT code FROM module WHERE  module.course_code = course_code;


        DECLARE CONTINUE HANDLER FOR NOT FOUND SET finished = TRUE;
        SET day_count = 0;
        SET finished = FALSE;

        IF PERIOD_DIFF(EXTRACT(YEAR_MONTH FROM NOW()), EXTRACT(YEAR_MONTH FROM start_date)) > 0 THEN
            OPEN mod_cursor;

            insert_schedule : LOOP
            BEGIN
                FETCH NEXT FROM mod_cursor INTO module_code;

                IF finished THEN
                    LEAVE insert_schedule;
                END IF;

                SET new_date = DATEADD(day, day_count, start_date);

                    IF LEFT(DATE_FORMAT(new_date,'%W'),1) != 'S' THEN
                        INSERT INTO session (code, date) VALUES (module_code,new_date);
                        SET day_count = (day_count + 1);
                    ELSEIF DATE_FORMAT(new_date,'%w') = 0 THEN
                        INSERT INTO session (code, date) VALUES (module_code, DATEADD(day, day_count + 1,new_date));
                        SET day_count = (day_count + 2);
                    ELSEIF DATE_FORMAT(new_date,'%w') = 6 THEN
                        INSERT INTO session (code, date) VALUES (module_code, DATEADD(day, day_count + 2,new_date));
                        SET day_count = (day_count + 3);
                    END IF;
            END LOOP insert_schedule;
            CLOSE mod_cursor;
        END IF;
    END;
    $$

我收到以下错误消息：

[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near:
       'LOOP insert_schedule;
     CLOSE mod_cursor;
   END IF;
 END;
$$' 
at line 38

如果有人能告诉我错误在哪里，我会非常感激！欢呼！

Answer 1

我的猜测是你错过了结束第二次 BEGIN

在这些

之前没有 END

 'LOOP insert_schedule;
     CLOSE mod_cursor;
   END IF;
 END;
$$' 



      DELIMITER $$
CREATE PROCEDURE Assign_Schedule (IN course_code CHAR(3),IN start_date DATE)
BEGIN
        DECLARE module_code CHAR(2);
        DECLARE day_count TINYINT;
        DECLARE new_date DATE;  
        DECLARE finished BOOLEAN;

        DECLARE mod_cursor CURSOR FOR SELECT code FROM module WHERE  module.course_code = course_code;


        DECLARE CONTINUE HANDLER FOR NOT FOUND SET finished = TRUE;
        SET day_count = 0;
        SET finished = FALSE;

        IF PERIOD_DIFF(EXTRACT(YEAR_MONTH FROM NOW()), EXTRACT(YEAR_MONTH FROM start_date)) > 0 THEN
            OPEN mod_cursor;

            insert_schedule : LOOP
            BEGIN
                FETCH NEXT FROM mod_cursor INTO module_code;

                IF finished THEN
                    LEAVE insert_schedule;
                END IF;

                SET new_date = DATEADD(day, day_count, start_date);

                    IF LEFT(DATE_FORMAT(new_date,'%W'),1) != 'S' THEN
                        INSERT INTO session (code, date) VALUES (module_code,new_date);
                        SET day_count = (day_count + 1);
                    ELSEIF DATE_FORMAT(new_date,'%w') = 0 THEN
                        INSERT INTO session (code, date) VALUES (module_code, DATEADD(day, day_count + 1,new_date));
                        SET day_count = (day_count + 2);
                    ELSEIF DATE_FORMAT(new_date,'%w') = 6 THEN
                        INSERT INTO session (code, date) VALUES (module_code, DATEADD(day, day_count + 2,new_date));
                        SET day_count = (day_count + 3);
                    END IF;
                END;
            END LOOP insert_schedule;
            CLOSE mod_cursor;
        END IF;
    END;
    $$

MySQL语法错误：我找不到它

1 个答案: