select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') as nowTime from dual; //日期转化 为字符串 select to_char(sysdate,'yyyy') as nowYear from dual; //获取时间的年 select to_char(sysdate,'mm') as nowMonth from dual; //获取时间的月 select to_char(sysdate,'dd') as nowDay from dual; //获取时间的日 select to_char(sysdate,'hh24') as nowHour from dual; //获取时间的时 select to_char(sysdate,'mi') as nowMinute from dual; //获取时间的分 select to_char(sysdate,'ss') as nowSecond from dual; //获取时间的秒 select to_date('2004-05-07 13:23:44','yyyy-mm-dd hh24:mi:ss') from dual// 自留备用。。。。
oracle 函数
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