Sql 实际上，这也是我最后推导出的矩阵。我用它来计算一个月的工作日数，并根据2016-2020年进行了验证。此字符串产生正确的结果，答案和注释中其他地方提到的字符串是错误的。它基于@Bryan Geraghty的解决方案，因此此解决方案的输出与Excel的NET
Sql 实际上，这也是我最后推导出的矩阵。我用它来计算一个月的工作日数，并根据2016-2020年进行了验证。此字符串产生正确的结果，答案和注释中其他地方提到的字符串是错误的。它基于@Bryan Geraghty的解决方案，因此此解决方案的输出与Excel的NET,sql,mysql,Sql,Mysql,实际上，这也是我最后推导出的矩阵。我用它来计算一个月的工作日数，并根据2016-2020年进行了验证。此字符串产生正确的结果，答案和注释中其他地方提到的字符串是错误的。它基于@Bryan Geraghty的解决方案，因此此解决方案的输出与Excel的NETWORKDAYS不兼容。DATEDIFF（LAST_DAY（？））+1）是否始终是DAY（LAST_DAY（？）简单且功能正常。这是不正确的。datediff需要+1。还有第三部分，如果开始日期是星期三，结束日期是星期天，那么你已经添加了它们，
实际上，这也是我最后推导出的矩阵。我用它来计算一个月的工作日数，并根据2016-2020年进行了验证。此字符串产生正确的结果，答案和注释中其他地方提到的字符串是错误的。它基于@Bryan Geraghty的解决方案，因此此解决方案的输出与Excel的NETWORKDAYS不兼容。DATEDIFF（LAST_DAY（？））+1）是否始终是DAY（LAST_DAY（？）简单且功能正常。这是不正确的。datediff需要+1。还有第三部分，如果开始日期是星期三，结束日期是星期天，那么你已经添加了它们，你仍然有周末在里面。我会发布更详细的解决方案。很抱歉，我无法分析此问题。你是说你有3个不同的输入，开始日期和结束日期？我以为你在计算起点和终点之间的差异？
DECLARE @StartDate DATETIME,
@EndDate DATETIME
SELECT @StartDate = '22 Nov 2009',
@EndDate = '28 Nov 2009'
;WITH CTE AS(
SELECT @StartDate DateVal,
DATENAME(dw, @StartDate) DayNameVal
UNION ALL
SELECT DateVal + 1,
DATENAME(dw, DateVal + 1)
FROM CTE
WHERE DateVal < @EndDate
)
SELECT COUNT(1)
FROM (
SELECT *
FROM CTE
WHERE DayNameVal NOT IN ('Sunday','Saturday')
) DayVals
CREATE TABLE Calendar
(
calendar_date DATETIME NOT NULL,
is_holiday BIT NOT NULL,
is_weekend BIT NOT NULL,
CONSTRAINT PK_Calendar PRIMARY KEY CLUSTERED (calendar_date)
)
SELECT
COUNT(*)
FROM
Calendar
WHERE
calendar_date BETWEEN '2009-01-01' AND '2009-10-01' AND
is_holiday = 0 AND
is_weekend = 0
DELIMITER $$
DROP FUNCTION IF EXISTS `catalog`.`WORKDAYS` $$
CREATE FUNCTION `catalog`.`WORKDAYS` (first_date DATETIME, second_date DATETIME) RETURNS INT
LANGUAGE SQL
DETERMINISTIC
BEGIN
DECLARE start_date DATE;
DECLARE end_date DATE;
DECLARE diff INT;
IF (first_date < second_date) THEN
SET start_date = first_date;
SET end_date = second_date;
ELSE
SET start_date = second_date;
SET end_date = first_date;
END IF;
SET diff = DATEDIFF(end_date, start_date);
RETURN (CASE WHEN DAYNAME(start_date) not in ('Saturday', 'Sunday') && DAYNAME(end_date) = 'Saturday' THEN diff
WHEN DAYNAME(start_date) not in ('Saturday', 'Sunday') && DAYNAME(end_date) = 'Sunday' THEN (diff - 2)
WHEN DAYNAME(start_date) = 'Saturday' && DAYNAME(end_date) = 'Sunday' THEN (diff - 1)
WHEN DAYNAME(start_date) = 'Saturday' && DAYNAME(end_date) = 'Saturday' THEN (diff + 1)
WHEN DAYNAME(start_date) = 'Sunday' && DAYNAME(end_date) in ('Saturday', 'Sunday') THEN (diff + 1)
WHEN DAYNAME(start_date) = 'Saturday' && DAYNAME(end_date) not in ('Saturday', 'Sunday') THEN (diff -1)
WHEN DAYNAME(start_date) = 'Sunday' && DAYNAME(end_date) not in ('Saturday', 'Sunday') THEN (diff + 1)
WHEN DAYNAME(start_date) not in ('Saturday', 'Sunday') && DAYNAME(end_date) not in ('Saturday', 'Sunday')
&& WEEKDAY(start_date) > WEEKDAY(end_date) THEN (diff - 2)
ELSE diff END)
- (FLOOR(diff / 7) * 2)
- (CASE WHEN DAYNAME(start_date) = 'Sunday' THEN 1 ELSE 0 END)
- (CASE WHEN DAYNAME(end_date) = 'Saturday' THEN 1 ELSE 0 END);
END $$
DELIMITER ;
SELECT
@tmp_s := ept.`date_start`,
@tmp_e := IF(ept.`date_end` IS NULL, NOW(),ept.`date_end`),
@start := IF(DAYOFWEEK(@tmp_s)=1,@tmp_s + INTERVAL 1 DAY,(IF(DAYOFWEEK(@tmp_s)=7,@tmp_s + INTERVAL 2 DAY,@tmp_s)),
@end := IF(DAYOFWEEK(@tmp_e)=1,@tmp_e - INTERVAL 2 DAY,(IF(DAYOFWEEK(@tmp_e)=7,@tmp_e - INTERVAL 1 DAY,@tmp_e)),
@bizdays := CASE
WHEN DATEDIFF(@end,@start)>7 THEN CEIL((DATEDIFF(@end,@start)/7)*5)
WHEN DAYOFWEEK(@end)< DAYOFWEEK(@start) THEN DATEDIFF(@end,@start)-2
ELSE DATEDIFF(@end,@start)
END,
DATE(@start),
DATE(@end),
IF(@bizdays>=10,10,@bizdays)
FROM `employee_points` ept
WHERE ept.`date_start` > '2011-01-01'
SELECT (DATEDIFF(LAST_DAY(?),?) + 1) -
((WEEK(LAST_DAY(?)) - WEEK(?)) * 2) -
(case when weekday(?) = 6 then 1 else 0 end) -
(case when weekday(LAST_DAY(?)) = 5 then 1 else 0 end)
5 * (DATEDIFF(@E, @S) DIV 7) + MID('0123444401233334012222340111123400012345001234550', 7 * WEEKDAY(@S) + WEEKDAY(@E) + 1, 1)
| M T W T F S S
-|--------------
M| 0 1 2 3 4 4 4
T| 4 0 1 2 3 3 3
W| 3 4 0 1 2 2 2
T| 2 3 4 0 1 1 1
F| 1 2 3 4 0 0 0
S| 1 2 3 4 5 0 0
S| 1 2 3 4 5 5 0
| M T W T F S S
-|--------------
M| 0 1 2 3 4 4 4
T| 4 0 1 2 3 3 3
W| 3 4 0 1 2 2 2
T| 2 3 4 0 1 1 1
F| 1 2 3 4 0 0 0
S| 0 1 2 3 4 0 0
S| 0 1 2 3 4 4 0
5 * (DATEDIFF(@E, @S) DIV 7) + MID('0123444401233334012222340111123400001234000123440', 7 * WEEKDAY(@S) + WEEKDAY(@E) + 1, 1)
| M T W T F S S
-|--------------
M| 0 1 2 3 4 5 5
T| 5 0 1 2 3 4 4
W| 4 5 0 1 2 3 3
T| 3 4 5 0 1 2 2
F| 2 3 4 5 0 1 1
S| 0 1 2 3 4 0 0
S| 0 1 2 3 4 5 0
0123455501234445012333450122234501101234000123450
5 * (DATEDIFF(@E, @S) DIV 7) + MID('0123455501234445012333450122234501101234000123450', 7 * WEEKDAY(@S) + WEEKDAY(@E) + 1, 1)
Sunday, 2012-08-26 -> Monday, 2012-08-27 = 0
Sunday, 2012-08-26 -> Sunday, 2012-09-02 = 5
Monday, 2012-08-27 -> Tuesday, 2012-08-28 = 1
Monday, 2012-08-27 -> Monday, 2012-09-10 = 10
Monday, 2012-08-27 -> Monday, 2012-09-17 = 15
Monday, 2012-08-27 -> Tuesday, 2012-09-18 = 16
Monday, 2012-08-27 -> Monday, 2012-09-24 = 20
Monday, 2012-08-27 -> Monday, 2012-10-01 = 25
Tuesday, 2012-08-28 -> Wednesday, 2012-08-29 = 1
Wednesday, 2012-08-29 -> Thursday, 2012-08-30 = 1
Thursday, 2012-08-30 -> Friday, 2012-08-31 = 1
Friday, 2012-08-31 -> Saturday, 2012-09-01 = 1
Saturday, 2012-09-01 -> Sunday, 2012-09-02 = 0
Sunday, 2012-09-02 -> Monday, 2012-09-03 = 0
Monday, 2012-09-03 -> Tuesday, 2012-09-04 = 1
Tuesday, 2012-09-04 -> Wednesday, 2012-09-05 = 1
Wednesday, 2012-09-05 -> Thursday, 2012-09-06 = 1
Thursday, 2012-09-06 -> Friday, 2012-09-07 = 1
Friday, 2012-09-07 -> Saturday, 2012-09-08 = 1
Saturday, 2012-09-08 -> Sunday, 2012-09-09 = 0
Monday, 2012-09-24 -> Sunday, 2012-10-07 = 10
Saturday, 2012-08-25 -> Saturday, 2012-08-25 = 0
Saturday, 2012-08-25 -> Sunday, 2012-08-26 = 0
Saturday, 2012-08-25 -> Monday, 2012-08-27 = 0
Saturday, 2012-08-25 -> Tuesday, 2012-08-28 = 1
Saturday, 2012-08-25 -> Wednesday, 2012-08-29 = 2
Saturday, 2012-08-25 -> Thursday, 2012-08-30 = 3
Saturday, 2012-08-25 -> Friday, 2012-08-31 = 4
Saturday, 2012-08-25 -> Sunday, 2012-09-02 = 0
Monday, 2012-08-27 -> Monday, 2012-08-27 = 0
Monday, 2012-08-27 -> Tuesday, 2012-08-28 = 1
Monday, 2012-08-27 -> Wednesday, 2012-08-29 = 2
Monday, 2012-08-27 -> Thursday, 2012-08-30 = 3
Monday, 2012-08-27 -> Friday, 2012-08-31 = 4
Monday, 2012-08-27 -> Saturday, 2012-09-01 = 5
Monday, 2012-08-27 -> Sunday, 2012-09-02 = 5
DELIMITER //
DROP FUNCTION IF EXISTS WORKDAYS_LEFT//
CREATE FUNCTION WORKDAYS_LEFT(target_date DATE, location char(2))
RETURNS INT
LANGUAGE SQL
DETERMINISTIC
BEGIN
DECLARE start_date DATE;
DECLARE end_date DATE;
DECLARE check_date DATE;
DECLARE diff INT;
DECLARE extra_weekend_days INT;
DECLARE weeks_diff INT;
SET start_date = CURDATE();
SET end_date = target_date;
SET diff = DATEDIFF(end_date, start_date);
SET weeks_diff = FLOOR(diff / 7);
SET end_date = DATE_SUB(end_date, INTERVAL (weeks_diff * 7) DAY);
SET check_date = DATE_ADD(start_date, INTERVAL 1 DAY);
SET extra_weekend_days = 0;
WHILE check_date <= end_date DO
SET extra_weekend_days = extra_weekend_days +
IF(DAYNAME(check_date) = 'Saturday', 1, 0) +
IF(DAYNAME(check_date) = IF(location = 'IL','Friday', 'Sunday'), 1, 0);
SET check_date = DATE_ADD(check_date, INTERVAL 1 DAY);
END WHILE;
RETURN diff - weeks_diff*2 - extra_weekend_days;
END//
DELIMITER ;
SELECT (DATEDIFF(date_end, date_start)) -
((WEEK(date_end) - WEEK(date_start)) * 2) -
(case when weekday(date_end) = 6 then 1 else 0 end) -
(case when weekday(date_start) = 5 then 1 else 0 end) -
(SELECT COUNT(*) FROM holidays WHERE holiday>=date_start and holiday<=data_end)
CREATE FUNCTION `WDDIFF` (d0 DATE, d1 DATE)
RETURNS INT DETERMINISTIC
COMMENT 'Date0, Date1'
BEGIN
RETURN DATEDIFF(d1, d0) - (DATEDIFF(DATE_SUB(d1, INTERVAL WEEKDAY(d1) DAY), DATE_ADD(d0, INTERVAL (7 - WEEKDAY(d0)) DAY))/7+1)*2 + IF(WEEKDAY(d0)>4, 1, 0) + 1;
END
RETURN (diff + 1)
- (FLOOR(diff / 7) * 2)
- (CASE WHEN DAYNAME(start_date) = 'Sunday' THEN 1 ELSE 0 END)
- (CASE WHEN DAYNAME(end_date) = 'Saturday' THEN 1 ELSE 0 END)
- (CASE WHEN diff<7 and WEEK(start_date)<>WEEK(end_date) THEN 2 ELSE 0 end);
DELIMITER $$
DROP FUNCTION IF EXISTS WORKDAYS $$
CREATE FUNCTION `WORKDAYS` (first_date DATETIME, second_date DATETIME) RETURNS INT
LANGUAGE SQL
DETERMINISTIC
BEGIN
DECLARE start_date DATE;
DECLARE end_date DATE;
DECLARE diff INT;
DECLARE NumberOfWeeks INT;
DECLARE RemainingDays INT;
DECLARE firstDayOfTheWeek INT;
DECLARE lastDayOfTheWeek INT;
DECLARE WorkingDays INT;
IF (first_date < second_date) THEN
SET start_date = first_date;
SET end_date = second_date;
ELSE
SET start_date = second_date;
SET end_date = first_date;
END IF;
## Add one to include both days in interval
SET diff = DATEDIFF(end_date, start_date)+1;
SET NumberOfWeeks=floor(diff/7);
SET RemainingDays=MOD(diff,7);
SET firstDayOfTheWeek=DAYOFWEEK(start_date);
SET lastDayOfTheWeek=DAYOFWEEK(end_date);
IF(firstDayOfTheWeek <= lastDayOfTheWeek) THEN
IF( firstDayOfTheWeek<=6 AND 6 <=lastDayOfTheWeek) THEN SET RemainingDays=RemainingDays-1; END IF;
IF( firstDayOfTheWeek<=7 AND 7 <=lastDayOfTheWeek) THEN SET RemainingDays=RemainingDays-1; END IF;
ELSE
IF( firstDayOfTheWeek=7) THEN SET RemainingDays=RemainingDays-1;
IF (lastDayOfTheWeek=6) THEN SET RemainingDays=RemainingDays-1; END IF;
ELSE SET RemainingDays=RemainingDays-2;
END IF;
END IF;
SET WorkingDays=NumberOfWeeks*5;
IF(RemainingDays>0) THEN RETURN WorkingDays+RemainingDays;
ELSE RETURN WorkingDays; END IF;
END $$
DELIMITER ;
-- Routine DDL
-- Note: comments before and after the routine body will not be stored by the server
-- --------------------------------------------------------------------------------
DELIMITER $$
CREATE DEFINER=`root`@`localhost` FUNCTION `fn_GetBusinessDaysBetweenDates`(d1 DATE, d2 DATE) RETURNS int(11)
BEGIN
DECLARE bDaysInPeriod INT;
SET bDaysInPeriod=0;
WHILE d1<=d2 DO
IF DAYOFWEEK(d1) BETWEEN 2 AND 6 THEN
SET bDaysInPeriod=bDaysInPeriod+1;
END IF;
SET d1=d1+INTERVAL 1 day;
END WHILE;
RETURN bDaysInPeriod;
END
| M T W T F S S
-|--------------
M| 0 1 2 3 4 5 5
T| 4 0 1 2 3 4 4
W| 3 4 0 1 2 3 3
T| 2 3 4 0 1 2 2
F| 1 2 3 4 0 1 1
S| 0 1 2 3 4 0 0
S| 0 1 2 3 4 5 0
Below function will give you the Weekdays, Weekends, Date difference with proper results:
You can call the below function like,
select getWorkingday('2014-04-01','2014-05-05','day_diffs');
select getWorkingday('2014-04-01','2014-05-05','work_days');
select getWorkingday('2014-04-01','2014-05-05','weekend_days');
DROP FUNCTION IF EXISTS PREPROCESSOR.getWorkingday;
CREATE FUNCTION PREPROCESSOR.`getWorkingday`(d1 datetime,d2 datetime, retType varchar(20)) RETURNS varchar(255) CHARSET utf8
BEGIN
DECLARE dow1, dow2,daydiff,workdays, weekenddays, retdays,hourdiff INT;
declare newstrt_dt datetime;
SELECT dd.iDiff, dd.iDiff - dd.iWeekEndDays AS iWorkDays, dd.iWeekEndDays into daydiff, workdays, weekenddays
FROM (
SELECT
dd.iDiff,
((dd.iWeeks * 2) +
IF(dd.iSatDiff >= 0 AND dd.iSatDiff < dd.iDays, 1, 0) +
IF (dd.iSunDiff >= 0 AND dd.iSunDiff < dd.iDays, 1, 0)) AS iWeekEndDays
FROM (
SELECT dd.iDiff, FLOOR(dd.iDiff / 7) AS iWeeks, dd.iDiff % 7 iDays, 5 - dd.iStartDay AS iSatDiff, 6 - dd.iStartDay AS iSunDiff
FROM (
SELECT
1 + DATEDIFF(d2, d1) AS iDiff,
WEEKDAY(d1) AS iStartDay
) AS dd
) AS dd
) AS dd ;
if(retType = 'day_diffs') then
set retdays = daydiff;
elseif(retType = 'work_days') then
set retdays = workdays;
elseif(retType = 'weekend_days') then
set retdays = weekenddays;
end if;
RETURN retdays;
END;
Thank You.
Vinod Cyriac.
Bangalore
DROP FUNCTION IF EXISTS DateDiffBusiness;
DELIMITER &
CREATE FUNCTION DateDiffBusiness( d2 DATE, d1 DATE )
RETURNS INT
DETERMINISTIC
COMMENT 'Calculates the number of bussiness days between two dates'
BEGIN
DECLARE dow1, dow2, days INT;
SET dow1 = DAYOFWEEK(d1);
SET dow2 = DAYOFWEEK(d2);
SET days = FLOOR( DATEDIFF(d2,d1)/7 ) * 5 +
CASE
WHEN dow1=1 AND dow2=7 THEN 5
WHEN dow1 IN(7,1) AND dow2 IN (7,1) THEN 0
WHEN dow1=dow2 THEN 1
WHEN dow1 IN(7,1) AND dow2 NOT IN (7,1) THEN dow2-1
WHEN dow1 NOT IN(7,1) AND dow2 IN(7,1) THEN 7-dow1
WHEN dow1<=dow2 THEN dow2-dow1+1
WHEN dow1>dow2 THEN 5-(dow1-dow2-1)
ELSE 0
END;
RETURN days-1;
END&
DELIMITER ;
DROP FUNCTION IF EXISTS DateAddBusiness;
DELIMITER &
CREATE FUNCTION DateAddBusiness(mydate DATE, numday INT)
RETURNS DATE
DETERMINISTIC
COMMENT 'Adds bussiness days between two dates'
BEGIN
DECLARE num_week INT DEFAULT 0;
DECLARE num_day INT DEFAULT 0;
DECLARE adj INT DEFAULT 0;
DECLARE total INT DEFAULT 0;
SET num_week = numday DIV 5;
SET num_day = MOD(numday, 5);
IF (WEEKDAY(mydate) + num_day >= 5) then
SET adj = 2;
END IF;
SET total = num_week * 7 + adj + num_day;
RETURN DATE_ADD(mydate, INTERVAL total DAY);
END&
DELIMITER ;
DELIMITER $$
DROP FUNCTION IF EXISTS `WORKDAYS` $$
CREATE FUNCTION `WORKDAYS` (first_date DATETIME, second_date DATETIME) RETURNS INT
LANGUAGE SQL
DETERMINISTIC
BEGIN
DECLARE start_date DATE;
DECLARE end_date DATE;
DECLARE diff INT;
DECLARE cnt INT;
IF (first_date < second_date) THEN
SET start_date = first_date;
SET end_date = second_date;
ELSE
SET start_date = second_date;
SET end_date = first_date;
END IF;
SELECT COUNT(*) INTO cnt FROM `holiday` WHERE (hday BETWEEN start_date AND end_date) and (DAYOFWEEK(hday) != 7 and DAYOFWEEK(hday) != 1);
SET diff = DATEDIFF(end_date, start_date) ;
RETURN (CASE WHEN DAYNAME(start_date) not in ('Saturday', 'Sunday') && DAYNAME(end_date) = 'Saturday' THEN (diff - cnt)
WHEN DAYNAME(start_date) not in ('Saturday', 'Sunday') && DAYNAME(end_date) = 'Sunday' THEN (diff - 2 - cnt)
WHEN DAYNAME(start_date) = 'Saturday' && DAYNAME(end_date) = 'Sunday' THEN (diff - 1 - cnt)
WHEN DAYNAME(start_date) = 'Saturday' && DAYNAME(end_date) = 'Saturday' THEN (diff + 1 - cnt)
WHEN DAYNAME(start_date) = 'Sunday' && DAYNAME(end_date) in ('Saturday', 'Sunday') THEN (diff + 1 - cnt)
WHEN DAYNAME(start_date) = 'Saturday' && DAYNAME(end_date) not in ('Saturday', 'Sunday') THEN (diff -1 - cnt)
WHEN DAYNAME(start_date) = 'Sunday' && DAYNAME(end_date) not in ('Saturday', 'Sunday') THEN (diff + 1 - cnt)
WHEN DAYNAME(start_date) not in ('Saturday', 'Sunday') && DAYNAME(end_date) not in ('Saturday', 'Sunday')
&& WEEKDAY(start_date) > WEEKDAY(end_date) THEN (diff - 2 - cnt)
ELSE (diff - cnt) END)
- (FLOOR(diff / 7) * 2)
- (CASE WHEN DAYNAME(start_date) = 'Sunday' THEN 1 ELSE 0 END)
- (CASE WHEN DAYNAME(end_date) = 'Saturday' THEN 1 ELSE 0 END);
END $$
DROP TABLE IF EXISTS `holiday`;
CREATE TABLE `holiday` (
`id` bigint(32) unsigned NOT NULL AUTO_INCREMENT,
`hday` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO `holiday` (`id`, `hday`) VALUES
(1, '2012-01-01'),
(2, '2012-05-01'),
(3, '2012-05-08'),
(4, '2012-07-05'),
(5, '2012-07-06'),
(6, '2012-09-28'),
(7, '2012-10-28'),
(8, '2012-11-17'),
(9, '2012-12-24'),
(10, '2012-12-25'),
(11, '2012-12-26');
etc...
DELIMITER //
DROP FUNCTION IF EXISTS NETWORKDAYS//
CREATE FUNCTION NETWORKDAYS(sd DATE, ed DATE)
RETURNS INT
LANGUAGE SQL
DETERMINISTIC
BEGIN
RETURN (5 * (DATEDIFF(ed, sd) DIV 7) + MID('0123444401233334012222340111123400001234000123440', 7 * WEEKDAY(sd) + WEEKDAY(ed) + 1, 1))+1;
END//
DELIMITER ;
SELECT NETWORKDAYS('2015-01-01 06:00:00', '2015-01-20 06:00:00');
DELIMITER $$
DROP FUNCTION IF EXISTS WORKDAYSDIFF$$
CREATE FUNCTION WORKDAYSDIFF(sd DATE, ed DATE)
RETURNS INT
LANGUAGE SQL
DETERMINISTIC
BEGIN
RETURN IF (sd >= ed,
5 * (DATEDIFF(sd, ed) DIV 7) + MID('0123455501234445012333450122234501101234000123450', 7 * WEEKDAY(ed) + WEEKDAY(sd) + 1, 1),
-(5 * (DATEDIFF(ed, sd) DIV 7) + MID('0123455501234445012333450122234501101234000123450', 7 * WEEKDAY(sd) + WEEKDAY(ed) + 1, 1)) );
END$$
DELIMITER ;
select datediff('2016-06-19','2016-06-01') - (floor(datediff('2016-06-19','2016-06-01')/6) + floor(datediff('2016-06-19','2016-06-01')/7));
CREATE DEFINER=`root`@`localhost` FUNCTION `weekdayDiff`
(
edate datetime,
sdate datetime
)
RETURNS int
DETERMINISTIC
BEGIN
if edate>sdate
then
return 5 * (DATEDIFF(edate, sdate) DIV 7) + MID('+0+1+2+3+4+4+4+4+0+1+2+3+3+3+3+4+0+1+2+2+2+2+3+4+0+1+1+1+1+2+3+4+0+0+0+0+1+2+3+4-1-1+0+1+2+3+4+4-1', 2*(7 * WEEKDAY(sdate) + WEEKDAY(edate)) + 1, 2);
else
return -(5 * (DATEDIFF(sdate, edate) DIV 7) + MID('+0+1+2+3+4+4+4+4+0+1+2+3+3+3+3+4+0+1+2+2+2+2+3+4+0+1+1+1+1+2+3+4+0+0+0+0+1+2+3+4-1-1+0+1+2+3+4+4-1', 2*(7 * WEEKDAY(edate) + WEEKDAY(sdate)) + 1, 2));
end if;
-- The following works unless both start and finish date are on weekends.
-- return 5 * (DATEDIFF(edate, sdate) DIV 7) + MID('0123444401233334012222340111123400001234000123440', 7 * WEEKDAY(sdate) + WEEKDAY(edate) + 1, 1);
END;
| M T W T F S S
-|---------------------
M| +0 +1 +2 +3 +4 +4 +4
T| +4 +0 +1 +2 +3 +3 +3
W| +3 +4 +0 +1 +2 +2 +2
T| +2 +3 +4 +0 +1 +1 +1
F| +1 +2 +3 +4 +0 +0 +0
S| +0 +1 +2 +3 +4 -1 -1
S| +0 +1 +2 +3 +4 +4 -1
set
@S = '2016-04-01',
@E = '2016-04-30';
select
case
when WEEKDAY(@S) < 5 then 5 - WEEKDAY(@S)
else 0
end #startweek
+
case
when WEEKDAY(@E) < 5 then WEEKDAY(@E) + 1
else 5
end #endweek
+
(
DATEDIFF(@E, @S) + 1 # plus 1 day cause params is inside 1 month
- (7 - WEEKDAY(@S)) # minus start week
- (WEEKDAY(@E) + 1) # minus end week
) DIV 7 * 5 #rest part
as work_date_count;
SELECT 5* (DATEDIFF(u.EndDate, u.StartDate) DIV 7) + MID('1234555512344445123333451222234511112345001234550', 7 * WEEKDAY(u.StartDate) + WEEKDAY(u.EndDate) + 1, 1)
DROP FUNCTION IF EXISTS datediff_workdays;
CREATE FUNCTION datediff_workdays(start_date DATE, end_date DATE) RETURNS INTEGER
BEGIN
RETURN 5 * (DATEDIFF(end_date, start_date) DIV 7) + MID('0123455501234445012333450122234501101234000123450', 7 * WEEKDAY(start_date) + WEEKDAY(end_date) + 1, 1);
END
drop procedure if exists get_duration$$
create procedure get_duration(in data_from date, in data_to date)
begin
if (WEEKDAY(data_from) = 5 AND WEEKDAY(data_to) = 5)
OR (WEEKDAY(data_from) = 6 AND WEEKDAY(data_to) = 6) then
select (5 * (DATEDIFF(data_to, data_from) DIV 7)
+ MID('0123444401233334012222340111123400001234000123440',
7 * WEEKDAY(data_from) + WEEKDAY(data_to) + 1, 1)) dur;
else
select (5 * (DATEDIFF(data_to, data_from) DIV 7)
+ MID('0123444401233334012222340111123400001234000123440',
7 * WEEKDAY(data_from) + WEEKDAY(data_to) + 1, 1))+1 dur;
end if;
end$$
RETURN ABS(DATEDIFF(date2, date1)) + 1
- ABS(DATEDIFF(ADDDATE(date2, INTERVAL 1 - DAYOFWEEK(date2) DAY),
ADDDATE(date1, INTERVAL 1 - DAYOFWEEK(date1) DAY))) / 7 * 2
- (DAYOFWEEK(IF(date1 < date2, date1, date2)) = 1)
- (DAYOFWEEK(IF(date1 > date2, date1, date2)) = 7)
- (SELECT DISTINCT COUNT(PriKey) FROM holidays WHERE date BETWEEN date1 AND date2)
+ (SELECT DISTINCT COUNT(PriKey) FROM weekenddaysworked WHERE date BETWEEN date1 AND date2)
select
FLOOR(DATEDIFF(later_date, earlier_date) / 7) * 5 +
least(DATEDIFF(later_date, earlier_date) % 7, 5) +
if(weekday(later_date) < weekday(earlier_date), -2, 0);
SELECT 5 * (DATEDIFF(@E, @S) DIV 7) +
CASE WHEN @E < @S THEN
-1 * MID('0123455401234434012332340122123401101234000123450', 7 * WEEKDAY(@E) + WEEKDAY(@S) + 1, 1)
ELSE
MID('0123455401234434012332340122123401101234000123450', 7 * WEEKDAY(@S) + WEEKDAY(@E) + 1, 1)
END
+------------+------------+-----------+
| @S | @E | wday_diff |
+------------+------------+-----------+
| 2019-11-25 | 2019-10-26 | -20 |
| 2019-11-25 | 2019-11-28 | 3 |
+------------+------------+-----------+