oracle日期相关函数
发布时间:2020-12-12 15:17:12 所属栏目:百科 来源:网络整理
导读:1、查询上月的所有日期: SELECT TO_CHAR (TRUNC (TRUNC (SYSDATE, 'MM' ) - 1 , 'month' ) + LEVEL - 1 , 'yyyy-MM-dd' ) AS month_day FROM DUAL CONNECT BY LEVEL = TO_CHAR (LAST_DAY (TRUNC (SYSDATE, 'MM' ) - 1 ), 'dd' ); 2、查询当月的所有日期: S
1、查询上月的所有日期: SELECT TO_CHAR (TRUNC (TRUNC (SYSDATE,'MM') - 1,'month') + LEVEL - 1,'yyyy-MM-dd') AS month_day FROM DUAL CONNECT BY LEVEL <= TO_CHAR (LAST_DAY (TRUNC (SYSDATE,'MM') - 1),'dd');
2、查询当月的所有日期: SELECT TO_CHAR (TRUNC (SYSDATE,'dd');
3、查询上月月份: SELECT TO_CHAR(ADD_MONTHS(SYSDATE,-1),'YYYY-MM') FROM DUAL;
4、查询当月天数: SELECT TO_CHAR (LAST_DAY (TRUNC (SYSDATE,'mm')),'DD') mounth_count FROM DUAL;
5、查询当月第一天: SELECT TRUNC (SYSDATE,'month') FROM DUAL;
6、查询当月最后一天: SELECT TO_CHAR (LAST_DAY (SYSDATE),'YYYY-MM-DD') FROM DUAL;
7、计算两个日期之间天数: SELECT TO_DATE ('2013-08-05','yyyy-MM-dd') - TO_DATE ('2013-08-01','yyyy-MM-dd') + 1 AS count_day FROM DUAL;
8、查询两个日期之间的所有日期: SELECT ROWNUM,TO_DATE ('2013-01-02','yyyy-MM-dd') + ROWNUM - 1 AS allday FROM DUAL CONNECT BY ROWNUM < TO_DATE ('2013-01-07','yyyy-MM-dd') - TO_DATE ('2013-01-02','yyyy-MM-dd') + 2; (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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