ORACLE日期相加减

select sysdate, (sysdate + 1) as add_a_day, --加1天 (sysdate + 1 / 24) as add_an_hour, --,加1小时 (sysdate + 1 / (24 * 60)) as add_a_minute, --加1分 (sysdate + 1 / (24 * 60 * 60)) as

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