Question

Oracle链接服务器查询花费的时间太长，无法执行大量记录。查询中涉及许多联接，其中某些表具有超过10万条记录。我尝试过放置索引，创建临时表并将它们包括在联接中而不是物理表中，但是没有一个起作用

SELECT 'BSC' as Site_Code,Item as Part_Number,BUYFROMBP as Supplier_Code,Company AS CPO_CODE, WHSE as Shop_floor_whse,IP as Installation_Plan,LineNumb as line_number,ForecastDATE,CONVERT(DATE,GETDATE())

 AS load_date,RecShipDate,    
        DelDateOpen,DelDateClose,PureForecastDate,NonNullLine,Qty    
                          FROM OPENQUERY(MINMAX_LS_ERPPROD,'SELECT  i.company,    
f.ITEM,    
  i.ITEMDESC,     
  i.PRODUCTCLASS,    
  i.BUYFROMBP,    
  m3.caldate RecShipDate,      
  m5.caldate DelDateOpen,     
  m6.caldate DelDateClose,   
  trunc(COALESCE(a.planstartdate,f.forecastdate)) as PureForecastDate,   
     (CASE I.PRODUCTCLASS WHEN ''MINMAX'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                      WHEN ''CBO-RP'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                      WHEN ''CBO-MM'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                                   WHEN ''CBO-DP'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                                   ELSE m6.caldate     
                                   END) AS ForecastDATE ,    
                                   a.LINENUMB,   
           COALESCE(a.linenumb, 0) as NonNullLine,   
   CASE I.PRODUCTCLASS WHEN ''CBO-IP'' THEN COALESCE(a.ASSYORDOP, '' '')    
                        else '' ''    
                        end   IP,     
   f.WHSE,    
   sum(coalesce(a.prodengqty,f.forecastqty)) Qty 
FROM C629.ITEMDATAGENERAL i  INNER JOIN C629.ITEMFORECASTDETAIL  f  ON i.ITEM = f.ITEM     
INNER JOIN C629.ITEMBUYFROMBP ibp ON i.item = ibp.item and i.buyfrombp = ibp.buyfrombp    
INNER JOIN C629.ITEMWHSEDATA iw on i.item = iw.item and i.whse = iw.whse    
LEFT JOIN C629.ASCOPENORDERDETAIL a  ON (f.ORDERNUMB = a.WHSEORD) AND (f.ITEM = a.ITEM) and trunc(f.FORECASTDATE) = trunc(a.PLANSTARTDATE)    
INNER join C629.mdaycal m on trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END) = m.caldate    
INNER join C629.mdaycal m4 on m.mfgdate=m4.caldate  
INNER join C629.mdaycal m2 on m.mdaylong = m2.mdaylong + iw.safetytimewhse + iw.outbndleadtimeiw + iw.inbndleadtimeiw + (ibp.calcleadtime-ibp.bpsafetytime - case when ibp.planfullsupplytimedesc = ''yes'' then ibp.fullsupplytime else ibp.supplytime end - ibp.internalprocesstime)-1    
INNER join C629.mdaycal m3 on m2.mdaylong = m3.mdaylong - iw.inbndleadtimeiw+1    
inner join C629.mdaycal m5 on m4.mdaylong = m5.mdaylong + iw.safetytimewhse + iw.outbndleadtimeiw + iw.inbndleadtimeiw - 1  
inner join C629.mdaycal m6 on m5.mdaylong = m6.mdaylong - iw.inbndleadtimeiw+1    
WHERE (((i.PRODUCTCLASS)=''MINMAX'' OR (i.PRODUCTCLASS) Like ''CBO%''))  and (ibp.plancluster is null OR ibp.plancluster = '' '')    
GROUP BY i.company, f.ITEM, I.PRODUCTCLASS,i.ITEMDESC, i.BUYFROMBP, m3.caldate,m5.caldate,m6.caldate,  
trunc(COALESCE(a.planstartdate,f.forecastdate)),       
                    (CASE I.PRODUCTCLASS WHEN ''MINMAX'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                      WHEN ''CBO-RP'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                      WHEN ''CBO-MM'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                                   WHEN ''CBO-DP'' THEN trunc(COALESCE(a.planstartdate,f.forecastdate)+ CASE WHEN i.company in (629,637,638,634,636,639,642) THEN 3/24 ELSE 0 END )    
                                   ELSE m6.caldate     
                                   END) ,    
                                   a.LINENUMB,coalesce(a.linenumb, 0), (CASE I.PRODUCTCLASS WHEN ''CBO-IP'' THEN COALESCE(a.ASSYORDOP, '' '')   
                     else '' ''  
                       end), f.WHSE    
order by i.company, f.item, m3.caldate asc')

查询运行了很长时间，然后由于对象错误而失败。实际上，当我删除以下联接时，查询运行正常-

INNER join C629.mdaycal m4 on m.mfgdate=m4.caldate  
INNER join C629.mdaycal m2 on m.mdaylong = m2.mdaylong + iw.safetytimewhse + iw.outbndleadtimeiw + iw.inbndleadtimeiw + (ibp.calcleadtime-ibp.bpsafetytime - case when ibp.planfullsupplytimedesc = ''yes'' then ibp.fullsupplytime else ibp.supplytime end - ibp.internalprocesstime)-1    
INNER join C629.mdaycal m3 on m2.mdaylong = m3.mdaylong - iw.inbndleadtimeiw+1    
inner join C629.mdaycal m5 on m4.mdaylong = m5.mdaylong + iw.safetytimewhse + iw.outbndleadtimeiw + iw.inbndleadtimeiw - 1  
inner join C629.mdaycal m6 on m5.mdaylong = m6.mdaylong - iw.inbndleadtimeiw+1

这意味着我必须以某种方式微调此逻辑，或者可能是其他原因，但是在删除这些联接后，查询将在2分钟内完成，否则需要40-50分钟或更长时间

Oracle链接服务器查询长时间运行以获取巨大的表记录

0 个答案: