我们正在使用Oracle 11。
在CASE WHEN语句中,我需要检查两个日期之间的天数是否大于3个工作日(因此不包括周末和节假日)。
CASE WHEN end_date - start_date > 3 THEN 0 --> this includes weekend
and holidays
WHEN CODE = 1 THEN 1
WHEN CODE =2 THEN 2
ELSE 3
END AS MyColumn
说我有一个假期日历表,该表的HolidayDates列包含所有假期,例如:12/25 / 2018、12 / 31/2018等。
HolidayDates
12/25/2018
12/31/2018
所以,如果
日期1 = 1/2/19(星期三)
Date2 = 18/27/18(星期四)
日期1和日期2之间的工作日数为3天(12 / 27、12 / 28和12/31)。
以下查询将获得不包括周末的工作日数。
如何在此查询中也排除假期?
SELECT TO_CHAR( start_date, 'YYYY-MM-DD "("DY")"') AS start_date,
( TRUNC( end_date, 'IW' ) - TRUNC( start_date, 'IW' ) ) * 5 / 7
+ LEAST( TRUNC( end_date ) - TRUNC( end_date, 'IW' ) + 1, 5 )
- LEAST( TRUNC( start_date ) - TRUNC( start_date, 'IW' ), 5 )
AS Num_Week_Days
FROM table_name;
谢谢。
答案 0 :(得分:0)
以this previous answer中的代码并将其从函数转换为查询可得出:
Oracle设置:
CREATE TABLE Holidays ( HolidayDates ) AS
SELECT DATE '2018-12-25' FROM DUAL UNION ALL
SELECT DATE '2018-12-31' FROM DUAL;
CREATE TABLE table_name ( start_date, end_date ) AS
SELECT DATE '2018-12-21', DATE '2018-12-26' FROM DUAL UNION ALL
SELECT DATE '2018-12-28', DATE '2019-01-01' FROM DUAL;
查询:
SELECT t.*,
( TRUNC( end_date, 'IW' ) - TRUNC( start_date, 'IW' ) ) * 5 / 7
+ LEAST( TRUNC( end_date ) - TRUNC( end_date, 'IW' ) + 1, 5 )
- LEAST( TRUNC( start_date ) - TRUNC( start_date, 'IW' ), 5 )
- ( SELECT COUNT(1)
FROM holidays
WHERE HolidayDates BETWEEN t.start_date AND t.end_date
-- Exclude any weekend holidays so we don't double count.
AND TRUNC( HolidayDates ) - TRUNC( HolidayDates, 'IW' ) <= 5
)
AS Num_Week_Days
FROM table_name t;
输出:
START_DATE | END_DATE | NUM_WEEK_DAYS :--------- | :-------- | ------------: 21-DEC-18 | 26-DEC-18 | 3 28-DEC-18 | 01-JAN-19 | 2 01-JAN-19 | 07-JAN-19 | 5
db <>提琴here