Question

在搜索了最近5个小时后，我无法弄清楚为什么这段代码不起作用......

如果我删除循环中的INSERT行，它确实可以正常工作???

我在Debian上使用Mysql 5.5。

请帮忙吗？提前谢谢。

 SET @j = 0;

DELIMITER $$
CREATE PROCEDURE procedureYearWeek(INOUT j INT)
    BEGIN
        DELETE FROM Periods WHERE perPeriods NOT IN (0);
        WHILE j < 10 DO
            INSERT INTO Periods (perPeriods) VALUES (YEARWEEK(ADDDATE(CURRENT_DATE(), INTERVAL j DAY)));
            SELECT j + 1 INTO j;
        END WHILE;
    END $$
DELIMITER ;

CALL procedureYearWeek(@j);

Answer 1

对不起，原来是我对Mysql缺乏经验以及一个愚蠢的错误。这就是答案：

DELIMITER $$
CREATE PROCEDURE procedureYearWeek()
BEGIN
    DECLARE j INT DEFAULT 0;
    DECLARE newDAta INT DEFAULT 0;
    DELETE FROM Periods WHERE perPeriods NOT IN (0);
        WHILE j < 10 DO
            INSERT INTO Periods (perPeriods) VALUES (YEARWEEK(ADDDATE(CURRENT_DATE(), INTERVAL newDAta DAY)));
            SET j = j + 1;
            SET newDAta = newDAta + 14;
        END WHILE;
    END $$
DELIMITER ;

Mysql在存储过程内变量

1 个答案: