摘要： oracle sql日期比较:在今天之前:select*fromup_datewhereupdate<to_date('2007-09-0700:00:00','yyyy-mm-ddhh24:mi:ss')select*fromup_datewhereupdate<=to_date('2007-09-0700:00:00','yyyy-mm-ddhh24:mi:ss')在今天只后:select*fromup_datewhereupdate>to_date('2007-09-0700:00:00', 阅读全文