我想为MySQL创建一个存储例程,用于计算一个月的业务或工作日数(工作日为周一至周五)。
这是语法错误,但我不知道语法错误是什么。它告诉我的全部是:
1064 - 您的SQL语法出错;检查与MySQL服务器版本对应的手册,以获得正确的语法 靠近'WHILE(@daycount< @totaldays)DO IF(WEEKDAY(@checkweekday)< 6) 然后在第2行
我的语法错误如下:
WHILE(@daycount < @totaldays) DO
IF (WEEKDAY(@checkweekday) < 6) THEN
我的代码:
SELECT MONTH(CURDATE()) INTO @curmonth;
SELECT MONTHNAME(CURDATE()) INTO @curmonthname;
SELECT DAY(LAST_DAY(CURDATE())) INTO @totaldays;
SELECT FIRST_DAY(CURDATE()) INTO @checkweekday;
SELECT DAY(@checkweekday) INTO @checkday;
SET @daycount = 0;
SET @workdays = 0;
BEGIN
WHILE(@daycount < @totaldays) DO
IF (WEEKDAY(@checkweekday) < 6) THEN
SET @workdays = @workdays+1;
END IF;
SET @daycount = @daycount+1;
SELECT ADDDATE('@checkweekday', INTERVAL 1 DAY) INTO @checkweekday;
END WHILE;
END;
SELECT @workdays;
有人能够提供帮助吗?
更新 我在下面的代码中收到了同样的错误,所以它可能与此有关:
SET @workdays = 0;
IF (WEEKDAY('2013-06-13') < 6) THEN
SET @workdays = @workdays+1;
END IF;
SELECT @workdays;
答案 0 :(得分:19)
我发现在mysql中你不能在存储过程之外有条件。这就是语法错误的原因。只要我把所需的代码放在
之间 BEGIN
SELECT MONTH(CURDATE()) INTO @curmonth;
SELECT MONTHNAME(CURDATE()) INTO @curmonthname;
SELECT DAY(LAST_DAY(CURDATE())) INTO @totaldays;
SELECT FIRST_DAY(CURDATE()) INTO @checkweekday;
SELECT DAY(@checkweekday) INTO @checkday;
SET @daycount = 0;
SET @workdays = 0;
WHILE(@daycount < @totaldays) DO
IF (WEEKDAY(@checkweekday) < 5) THEN
SET @workdays = @workdays+1;
END IF;
SET @daycount = @daycount+1;
SELECT ADDDATE(@checkweekday, INTERVAL 1 DAY) INTO @checkweekday;
END WHILE;
END
仅限其他人:
如果您不确定如何在phpmyadmin中创建例程,可以将其放在SQL查询中
delimiter ;;
drop procedure if exists test2;;
create procedure test2()
begin
select ‘Hello World’;
end
;;
运行查询。这将创建一个名为test2的存储过程或存储例程。现在转到例程选项卡并编辑存储过程以使其成为您想要的。如果您从存储过程开始,我还建议您阅读http://net.tutsplus.com/tutorials/an-introduction-to-stored-procedures/。
您需要的first_day功能是: How to get first day of every corresponding month in mysql?
显示程序正在运行 只需在END WHILE和END
下面添加以下行 SELECT @curmonth,@curmonthname,@totaldays,@daycount,@workdays,@checkweekday,@checkday;
然后在SQL查询窗口中使用以下代码。
call test2 /* or whatever you changed the name of the stored procedure to */
注意:如果您使用此功能,请注意此代码不会考虑到全国观察到的假期(或任何假期)。