å¨Oralceä¸æåç°æadd_monthså½æ°ï¼å 天æ°Nå¯ä»¥ç¨å¦ä¸æ¹æ³å®ç°,select sysdate+N from dual
å¨Oralceä¸æåç°æadd_monthså½æ°ï¼å 天æ°Nå¯ä»¥ç¨å¦ä¸æ¹æ³å®ç°,select sysdate+N from dual ,
sysdate+1 å ä¸å¤©
sysdate+1/24 å 1å°æ¶
sysdate+1/(24*60) å 1åé
sysdate+1/(24*60*60) å 1ç§é
ç±»æ¨è³æ¯«ç§0.001ç§
å æ³
select sysdate,add_months(sysdate,12) from dual; --å 1å¹´
select sysdate,add_months(sysdate,1) from dual; --å 1æ
select sysdate,to_char(sysdate+7,'yyyy-mm-dd HH24:MI:SS') from dual; --å 1ææ
select sysdate,to_char(sysdate+1,'yyyy-mm-dd HH24:MI:SS') from dual; --å 1天
select sysdate,to_char(sysdate+1/24,'yyyy-mm-dd HH24:MI:SS') from dual; --å 1å°æ¶
select sysdate,to_char(sysdate+1/24/60,'yyyy-mm-dd HH24:MI:SS') from dual; --å 1åé
select sysdate,to_char(sysdate+1/24/60/60,'yyyy-mm-dd HH24:MI:SS') from dual; --å 1ç§
åæ³
select sysdate,add_months(sysdate,-12) from dual; --å1å¹´
select sysdate,add_months(sysdate,-1) from dual; --å1æ
select sysdate,to_char(sysdate-7,'yyyy-mm-dd HH24:MI:SS') from dual; --å1ææ
select sysdate,to_char(sysdate-1,'yyyy-mm-dd HH24:MI:SS') from dual; --å1天
select sysdate,to_char(sysdate-1/24,'yyyy-mm-dd HH24:MI:SS') from dual; --å1å°æ¶
select sysdate,to_char(sysdate-1/24/60,'yyyy-mm-dd HH24:MI:SS') from dual; --å1åé
select sysdate,to_char(sysdate-1/24/60/60,'yyyy-mm-dd HH24:MI:SS') from dual; --å1ç§
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