KSQL中Update多表級聯更新的語法。 收藏
Update XXX Set FXXX =
( Select ①
From ...
Where ②)
Where ③
Update裏必須包括3個邏輯部分:
a.) 在①裏指明把字段更新爲什麼值,即新值.
b.) 在②裏指明待更新表和源表需要更新行之間的對應關係
c.) 在③裏指明待更新表有哪些記錄需要更新
注意: 寫好updte 語句後需要在ksql中翻譯一下,在oracle和db2下可能會多翻譯出一些語句(可能包含參數?) ,這樣會導致執行時報錯:
Caused exception message is: 索引中丟失 IN 或 OUT 參數:: 3
比如:
UPDATE T_SD_SaleOrderEntry
SET (FPreReceived, FUnPrereceivedAmount) =
(SELECT T_SD_SaleOrderEntry.FPreReceived + IsNull(rbe.FActualAmt, 0)
AS FPreReceived,
T_SD_SaleOrderEntry.FPrepayment - IsNull(rbe.FActualAmt, 0)
AS FUnPrereceivedAmount
FROM T_CAS_ReceivingBillEntry rbe
WHERE rbe.FSourceBillEntryId = T_SD_SaleOrderEntry.FID AND rbe.FReceivingBillID = "xxxx")
WHERE T_SD_SaleOrderEntry.FID IN
(SELECT soe.FID
FROM T_SD_SaleOrderEntry soe, T_CAS_ReceivingBillEntry rbe
WHERE rbe.FSourceBillEntryId = soe.FID AND rbe.FReceivingBillID = "xxxx")
本文來自CSDN博客,轉載請標明出處:http://blog.csdn.net/wiser/archive/2008/10/10/3052172.aspx