CreateTime--2017年9月7日17:14:56

Author:Marydon

ORACLE判断两个日期间隔几个工作日

方法：使用存储过程

/**

* 判断两个日期间隔几个工作日

*/

CREATE OR REPLACE FUNCTION "FUN_BETWEENDAYS"(start_dt date, end_dt date)

RETURN INT IS

t_days INT;

BEGIN

SELECT (TRUNC(end_dt - start_dt) - ((CASE

WHEN (8 - to_number(to_char(start_dt, 'D'))) >

TRUNC(end_dt - start_dt) + 1 THEN

0

ELSE

trunc((TRUNC(end_dt - start_dt) -

(8 - to_number(to_char(start_dt, 'D')))) / 7) + 1

END) + (CASE

WHEN MOD(8 - to_char(start_dt, 'D'), 7) >

TRUNC(end_dt - start_dt) - 1 THEN

0

ELSE

TRUNC((TRUNC(end_dt - start_dt) -

(MOD(8 - to_char(start_dt, 'D'), 7) + 1)) / 7) + 1

END)))

INTO t_days

FROM dual;

RETURN t_days;

END FUN_BETWEENDAYS;