Sql代碼 DELIMITER $$ drop procedure if exists `pGetWorkDays`$$ create procedure pGetWorkDays(s datetime,e datetime) begin select floor(days/7)*5+days%7 -case when 6 between wd and wd+days%7-1 then 1 else 0 end -case when 7 between wd and wd+days%7-1 then 1 else 0 end from (select datediff(e,s)+1 as days,weekday(s)+1 as wd) as a; end$$ DELIMITER ; call pGetWorkDays('2005-01-01','2005-12-31');