Oracle函数
发布时间:2020-12-12 12:49:10 所属栏目:百科 来源:网络整理
导读:-- EXTRACT函数:返回具体的年、月、日、时、分、秒等具体时间。 SELECT EXTRACT ( YEAR FROM -- SYSDATE SYSTIMESTAMP ) YEAR FROM DUAL; SELECT EXTRACT ( MONTH FROM -- SYSDATE SYSTIMESTAMP ) YEAR FROM DUAL; SELECT EXTRACT ( DAY FROM -- SYSDATE SY
-- EXTRACT函数:返回具体的年、月、日、时、分、秒等具体时间。 SELECT EXTRACT (YEAR FROM --SYSDATE SYSTIMESTAMP ) YEAR FROM DUAL; SELECT EXTRACT (MONTH FROM --SYSDATE SYSTIMESTAMP ) YEAR FROM DUAL; SELECT EXTRACT (DAY FROM --SYSDATE SYSTIMESTAMP ) YEAR FROM DUAL; SELECT EXTRACT (HOUR FROM SYSTIMESTAMP) YEAR FROM DUAL; SELECT EXTRACT (MINUTE FROM SYSTIMESTAMP) YEAR FROM DUAL; SELECT EXTRACT (SECOND FROM SYSTIMESTAMP) YEAR FROM DUAL; SELECT EXTRACT (DAY FROM SYSTIMESTAMP) YEAR FROM DUAL; SELECT EXTRACT(YEAR FROM ORDERDATE) AS O --EG: SELECT EXTRACT(YEAR FROM SYSDATE) AS YEAR_,EXTRACT(MONTH FROM SYSDATE) AS MONTH_,EXTRACT(DAY FROM SYSDATE) AS DAY_ FROM DUAL (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! |