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SQL 中怎么计算工作日,针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
CREATE FUNCTION Time_Span_of_minutes(
start_day DATETIME,
end_day DATETIME)
RETURNS FLOAT
BEGIN
— 返回按分钟计算两段时间的间隔,采用逐日靠近的方法求解,一天按 8 小时 480 分钟计算,周末不计,不考虑法定节假日。
— 如果起始日期在周末,则计算当天时间。
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
— 返回按分钟计算两段时间的间隔,采用逐日靠近的方法求解,一天按 8 小时 480 分钟计算,周末不计,不考虑法定节假日。
— 如果起始日期在周末,则计算当天时间。
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;
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