Question

我在MySQL中编写了一个存储过程。我在将日期值从日期转换为整数值时遇到问题。我需要将Day(now())转换为整数，因为我需要对此值进行一些操作。

请参阅下面的详细程序代码。

DROP PROCEDURE IF EXISTS `CREATE_PARTITION_FOR_MONTH`();
delimiter //
CREATE PROCEDURE `CREATE_PARTITION_FOR_MONTH`()
BEGIN
    DECLARE current_month_total_days_count INT;
    DECLARE current_month_days_left INT;
    DECLARE current_day INT;
    DECLARE next_month_first_date DATE ;
    DECLARE loop_start_val INT DEFAULT 0;
    DECLARE total_days_in_next_month INT;
    DECLARE next_month_var_date DATE;
    DECLARE partition_val VARCHAR(20) DEFAULT NULL;
    DECLARE range_val INT DEFAULT 0;
    SET current_month_total_days_count :=  CAST(DAY(LAST_DAY(now())) AS UNSIGNED);
    SET current_day := CAST(EXTRACT(MONTH FROM CURDATE()) AS UNSIGNED);
    SET current_month_days_left := current_month_total_days_count - current_day;
    SET next_month_first_date := DATE(ADDDATE(CURDATE(),current_month_days_left));
    SET total_days_in_next_month := DAY(LAST_DAY(next_month_first_date));
    SET next_month_var_date := next_month_first_date;
        SET loop_start_val := 0;
    WHILE loop_start_val < total_days_in_next_month DO
            SET next_month_var_date := DATE(ADDDATE(next_month_first_date,loop_start_val));
            SET partition_val :=  CONCAT('p',TO_DAYS(next_month_var_date));
            SET range_val := TO_DAYS(next_month_var_date);
            ALTER TABLE XYZ ADD PARTITION (PARTITION partition_val VALUES LESS THAN (range_val));      
            SET loop_start_val := loop_start_val+1;

    END WHILE;

END //;

DELIMITER ;

我收到此错误

错误1064（42000）：您的SQL语法有错误;检查与MySQL服务器版本对应的手册，以便在'range_val INT DEFAULT 0附近使用正确的语法; SET current_month_total_days_count = SELECT CAST（DAY（L'在第11行

Answer 1

查看投掷线错误*DELCARE* range_val INT DEFAULT 0; ... DELCARE是问题所在。应该是DECLARE。好笑......

如何调试这个MySQL存储过程语法错误？

1 个答案: