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SQL 中怎么計算工作日，針對這個問題，這篇文章詳細介紹了相對應的分析和解答，希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
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;
關于 SQL 中怎么計算工作日問題的解答就分享到這里了，希望以上內容可以對大家有一定的幫助，如果你還有很多疑惑沒有解開，可以關注丸趣 TV 行業資訊頻道了解更多相關知識。
