CREATE FUNCTION Time_Span_of_minutes(
start_day DATETIME,
end_day DATETIME)
RETURNS FLOAT
BEGIN
-- 返回按分鐘計算兩段時間的間隔，采用逐日靠近的方法求解，一天按8小時480分鐘計算，周末不計，不考慮法定節假日。
-- 如果起始日期在周末，則計算當天時間。
DECLARE minutes FLOAT;
DECLARE next_day DATETIME;
SET minutes=0.0;
SET next_day=start_day;
IF(TIMESTAMPDIFF(DAY,start_day,end_day)<1.0) THEN
SET minutes=minutes+TIMESTAMPDIFF(MINUTE,start_day,end_day);
ELSE
WHILE TIMESTAMPDIFF(DAY,next_day,end_day)>=1.0 DO
IF ((DAYOFWEEK(next_day)=7) OR (DAYOFWEEK(next_day)=1)) THEN
SET next_day=next_day+INTERVAL 1 DAY;
ELSE
SET next_day=next_day+INTERVAL 1 DAY;
SET minutes=minutes+480.0;
END IF;
END WHILE;
SET minutes=minutes+TIMESTAMPDIFF(MINUTE,next_day,end_day);
IF ((DAYOFWEEK(start_day)=7) OR (DAYOFWEEK(start_day)=1)) THEN
SET minutes=minutes+TIMESTAMPDIFF(MINUTE,start_day,CONVERT(CONCAT(SUBSTRING(start_day FROM 1 FOR 10),' 17:30:00'),DATETIME));
END IF;
END IF;
RETURN minutes;
END;
CREATE FUNCTION Time_Span_of_minutes(
start_day DATETIME,
end_day DATETIME)
RETURNS FLOAT
BEGIN
-- 返回按分鐘計算兩段時間的間隔，采用逐日靠近的方法求解，一天按8小時480分鐘計算，周末不計，不考慮法定節假日。
-- 如果起始日期在周末，則計算當天時間。
DECLARE minutes FLOAT;
DECLARE next_day DATETIME;
SET minutes=0.0;
SET next_day=start_day;
IF(TIMESTAMPDIFF(DAY,start_day,end_day)<1.0) THEN
SET minutes=minutes+TIMESTAMPDIFF(MINUTE,start_day,end_day);
ELSE
WHILE TIMESTAMPDIFF(DAY,next_day,end_day)>=1.0 DO
IF ((DAYOFWEEK(next_day)=7) OR (DAYOFWEEK(next_day)=1)) THEN
SET next_day=next_day+INTERVAL 1 DAY;
ELSE
SET next_day=next_day+INTERVAL 1 DAY;
SET minutes=minutes+480.0;
END IF;
END WHILE;
SET minutes=minutes+TIMESTAMPDIFF(MINUTE,next_day,end_day);
IF ((DAYOFWEEK(start_day)=7) OR (DAYOFWEEK(start_day)=1)) THEN
SET minutes=minutes+TIMESTAMPDIFF(MINUTE,start_day,CONVERT(CONCAT(SUBSTRING(start_day FROM 1 FOR 10),' 17:30:00'),DATETIME));
END IF;
END IF;
RETURN minutes;
END;
沒考慮中午休息時間
摘自 Jasper鍵盤舞步
