如何獲取兩個表並將它們合並為沒有“臨時”表的第三個表？

Question

我有幾個oracle字符串正在執行合並和插入，然后合並。 我讓它以這種方式工作，但是由於公司的限制，添加表至少需要兩周時間。 （我制作了site_item_temp表只是為了將此命令設置為起作用。）oracle服務器沒有該表，我們無法坐等DBA花時間添加表或具有適當特權的任何表，並且這樣。

我需要運行它而無需點擊site_item_temp表或除列出的表以外的任何其他表。 由於DBA的限制/時間限制。 我為此抓撓頭。 這可能非常簡單，但我只是在畫一個空白。

這是我運行的腳本。

MERGE INTO SITE_ITEM_MASTER D 
 USING ITEM_MST S 
    ON (D.SKU = S.INVEN_ID 
    and d.loc_id = s.loc_id)

WHEN NOT MATCHED THEN 
INSERT (D.SKU, D.CASES_PER_PALLET, D.LOC_ID) 
VALUES (S.INVEN_ID, S.CASE_PER_PAL_QTY, S.LOC_ID);



  DELETE FROM SITE_ITEM_TEMP;



  INSERT INTO SITE_ITEM_TEMP ( SKU, CASES_PER_PALLET, LOC_ID )
 SELECT ITEM_MST.INVEN_ID, AVG(ITEM_MST.CASE_PER_PAL_QTY) AS AVGOFCASE_PER_PAL_QTY, 
   ICAM_LOCATIONS.LOCATION_ID
   FROM ITEM_MST, ICAM_LOCATIONS
  GROUP BY ITEM_MST.INVEN_ID, ICAM_LOCATIONS.Location_ID;



  MERGE INTO SITE_ITEM_MASTER D 
 USING SITE_ITEM_TEMP S
    ON (D.SKU = S.SKU 
    AND D.LOC_ID = S.LOC_ID)

  WHEN NOT MATCHED THEN 
INSERT (D.SKU, D.CASES_PER_PALLET, D.LOC_ID) 
VALUES (S.SKU, S.CASES_PER_PALLET, S.LOC_ID);



  DELETE FROM SITE_ITEM_TEMP;

謝謝。

Answer 1

merge into site_item_master d 
 using item_mst s 
    on (d.sku = s.inven_id     
    and d.loc_id = s.loc_id)
when not matched then 
    insert (d.sku, d.cases_per_pallet, d.loc_id) 
    values (s.inven_id, s.case_per_pal_qty, s.loc_id);    

merge into site_item_master d 
 using (
       select item_mst.inven_id sku, avg(item_mst.case_per_pal_qty) as cases_per_pallet, icam_locations.location_id loc_id                
         FROM ITEM_MST, ICAM_LOCATIONS
        group by item_mst.inven_id, icam_locations.location_id
       ) s 
    on (d.sku = s.sku and d.loc_id = s.loc_id)
  when not matched then   
    insert (d.sku, d.cases_per_pallet, d.loc_id) 
    values (s.sku, s.cases_per_pallet, s.loc_id);

您可以將子查詢用於USING。 我只是用您選擇的替換了tmp表（用於插入tmp）

實際上，您不需要合並

insert into site_item_master (sku, cases_per_pallet, loc_id) 
select inven_id, case_per_pal_qty, loc_id from(
  select inven_id, case_per_pal_qty, loc_id 
    from item_mst
  union all
  select item_mst.inven_id sku, avg(item_mst.case_per_pal_qty), icam_locations.location_id
   from item_mst, icam_locations 
  group by item_mst.inven_id, icam_locations.location_id
) s
where not exists (select 1 from site_item_master d where d.sku = s.inven_id and d.loc_id = s.loc_id);