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  • 获取本周周一日期

    获得指定日期所在的周,周一日期

     方法一
    select
           CASE to_number(to_char(to_date('2011-09-20','yyyy-MM-dd'),'D'))
           WHEN 7 THEN to_date('2011-09-20','yyyy-MM-dd')-5
           WHEN 6 THEN to_date('2011-09-20','yyyy-MM-dd')-4
           WHEN 5 THEN to_date('2011-09-20','yyyy-MM-dd')-3
           WHEN 4 THEN to_date('2011-09-20','yyyy-MM-dd')-2
           WHEN 3 THEN to_date('2011-09-20','yyyy-MM-dd')-1
           WHEN 2 THEN to_date('2011-09-20','yyyy-MM-dd')
          ELSE to_date('2011-09-20','yyyy-MM-dd')-6         
          END                         
     AS curmon FROM dual;

    方法二

    select to_char(next_day(to_date('20110904','yyyymmdd')-7*(0+1),'星期一'),'yyyymmdd') Result from dual;

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  • 原文地址:https://www.cnblogs.com/6303c/p/2193450.html
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