如何更新與其他表連接的表中的列？

Question

我想參考其他表更新表的兩列。執行腳本時顯示錯誤。

錯誤：錯誤的命令開始第1行：

UPDATE wb_costing_work_items, 
     sa_sales_documents, 
     sa_sales_document_items 
    SET cwi_price_per_hour = sdi_price, 
     cwi_amount = sdi_price * cwi_hours 
WHERE cwi_lo_id = sad_lo_id 
    AND sdi_sad_id = sad_id 
    AND sdi_wit_id = cwi_wit_id 
    AND cwi_id = 1650833 

Error at Command Line:1 Column:28 Error report: SQL Error: ORA-00971: missing SET keyword 00971. 00000 - "missing SET keyword"

SQL語句

UPDATE wb_costing_work_items cwi, 
     sa_sales_documents sad, 
     sa_sales_document_items sdi 
    SET cwi.cwi_price_per_hour = sdi.sdi_price, 
     cwi.cwi_amount = sdi.sdi_price * cwi.cwi_hours 
WHERE cwi.cwi_lo_id = sad.sad_lo_id 
    AND sdi.sdi_sad_id = sad.sad_id 
    AND sdi.sdi_wit_id = cwi.cwi_wit_id 
    AND cwi.cwi_id = 1650855 

Answer 1

事情是這樣的，也許。

請注意，我不得不使用一些關於哪個列屬於哪個表的野蠻猜測，因爲您沒有包含關於如何定義表的任何信息。

所以最可能我沒有得到它的權利，你將需要調整查詢到您的實際表結構。

merge into wb_costing_work_items 
using 
(
    select cwi.pk_column, -- don't know what the PK of the wb_costing_work_items is due to lack of information 
      sdi.sdi_price, -- don't know if this column really belong to this table 
      sdi.sdi_price * cwi.cwi_hours as total-- again unsure about column names due to lack of information 
    FROM wb_costing_work_items cwi 
     JOIN sa_sales_documents sad ON sad.sad_lo_id = cwi.cwi_lo_id -- not sure about these, due to lack of information 
     JOIN sa_sales_document_items sdi 
     ON sdi.sad_id = sad.sdi_sad_id  -- not sure about these, due to lack of information 
     AND sdi.sdi_wit_id = cwi.cwi_wit_id -- not sure about these, due to lack of information 

) t ON (t.pk_column = w.pk_column) -- not sure about this, due to lack of information 
when matched then 
update 
    set cwi_price_per_hour = t.sdi_price, 
     cwi_amount = t.total; 

Answer 2

這應該肯定有效。

  UPDATE (SELECT cwi_price_per_hour, 
          sdi_price, 
          cwi_amount, 
          sdi_price, 
          cwi_hours 
         FROM wb_costing_work_items, 
          sa_sales_documents, 
          sa_sales_document_items 
        WHERE  cwi_lo_id = sad_lo_id 
          AND sdi_sad_id = sad_id 
          AND sdi_wit_id = cwi_wit_id 
          AND cwi_id = 1650833) 
       SET cwi_price_per_hour = sdi_price, cwi_amount = sdi_price * cwi_hours 

請使用別名表和前綴列，以便可以輕鬆讀取您的查詢。