mysql查詢問題

     select
        news0_.id as id0_,
        news0_.cdate as cdate0_,
        news0_.clicks as clicks0_,
        news0_.content as content0_,
        news0_.editor as editor0_,
        news0_.htmlPath as htmlPath0_,
        news0_.isPicNews as isPicNews0_,
        news0_.keywords as keywords0_,
        news0_.newsType as newsType0_,
        news0_.newsabstract as newsabs10_0_,
        news0_.ColumnsId as ColumnsId0_,
        news0_.newsfrom as newsfrom0_,
        news0_.picture as picture0_,
        news0_.priority as priority0_,
        news0_.red as red0_,
        news0_.status as status0_,
        news0_.title as title0_
    from
        news news0_
    where
        1=1
      
        and UNIX_TIMESTAMP(news0_.cdate)<=UNIX_TIMESTAMP('2014-1-1') 
        and UNIX_TIMESTAMP(news0_.cdate)>=UNIX_TIMESTAMP('1000-02-2') 

 

mysql查詢問題：時間的比較