兩個日期間隔三個工作日的sql語句

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CREATE OR REPLACE FUNCTION "FUN_BETWEENDAYS" (start_dt date,end_dt date)return int ist_days int;beginselect (trunc(end_dt - start_dt) -((caseWHEN (8 - to_number(to_char(start_dt,‘D‘))) > trunc(end_dt - start_dt) + 1 THEN 0ELSEtrunc((trunc(end_dt - start_dt) -(8 - to_number(to_char(start_dt,‘D‘))))/7) + 1 END) +(caseWHEN mod(8 - to_char(start_dt, ‘D‘), 7) > trunc(end_dt - start_dt) - 1 THEN 0ELSEtrunc((trunc(end_dt - start_dt) - (mod(8 - to_char(start_dt,‘D‘),7) + 1))/7) + 1 END)))into t_daysfrom dual;return t_days;end FUN_BETWEENDAYS

 

兩個日期間隔三個工作日的sql語句