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Oracle ROLLUPºÍCUBE Ó÷¨

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select f_sys_getsectnamebysectid(a.sectionid) as sectname,
        --a.sectionid,
       f_sys_employinfo_getnamebyno(a.buyerid) as name,
       sum(c.ratio) as llratio,
       sum(b.ratio) as lratio,
       sum(a.ratio) as ratio,
       sum(d.ratio) as nratio
  from (select sectionid, buyerid, ratio
          from T_PPRM_ASPPurRatio
         where year = '2008') a,
       (select buyerid, ratio from T_PPRM_ASPPurRatio where year = '2007') b,
       (select buyerid, ratio from T_PPRM_ASPPurRatio where year = '2006') c,
       (select buyerid, ratio from T_PPRM_ASPPurRatio where year = '2009') d
 where a.buyerid = b.buyerid(+)
   and b.buyerid = c.buyerid(+)
   and c.buyerid = d.buyerid(+)
 group by rollup(a.sectionid, a.buyerid)
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Oracle ROLLUPºÍCUBE Ó÷¨    
OracleµÄGROUP BYÓï¾ä³ýÁË×î»ù±¾µÄÓï·¨Í⣬»¹Ö§³ÖROLLUPºÍCUBEÓï¾ä¡£Èç¹ûÊÇROLLUP(A, B, C)µÄ»°£¬Ê×ÏÈ»á¶Ô(A¡¢B¡¢C)½øÐÐGROUP BY£¬È»ºó¶Ô(A¡¢B)½øÐÐGROUP BY£¬È»ºóÊÇ(A)½øÐÐGROUP BY£¬×îºó¶ÔÈ«±í½øÐÐGROUP BY²Ù×÷¡£Èç¹ûÊÇGROUP BY CUBE(A, B, C)£¬ÔòÊ×ÏÈ»á¶Ô(A¡¢B¡¢C)½øÐÐGROUP BY£¬È»ºóÒÀ´ÎÊÇ(A¡¢B)£¬(A¡¢C)£¬(A)£¬(B¡¢C)£¬(B)£¬(C)£¬×îºó¶ÔÈ«±í½øÐÐGROUP BY²Ù×÷¡£ grouping_id()¿ÉÒÔÃÀ»¯Ð§¹û£º
OracleµÄGROUP BYÓï¾ä³ýÁË×î»ù±¾µÄÓï·¨Í⣬»¹Ö§³ÖROLLUPºÍCUBEÓï¾ä¡£
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