帶有條件 INSERT 的合並語句

Question

我在合並語句中注意到源表中有PackageId為0 。 這些記錄不應插入到目標表中。 所以我想在我的 INSERT 上有這個條件。

MERGE MyTargetTable AS TARGET
USING MySourceTable AS SOURCE
ON (SOURCE.orderidHash = TARGET.Id)
WHEN MATCHED AND (TARGET.CustomerId <> SOURCE.CustomerId
    OR TARGET.PackageId <> SOURCE.packageid
    OR TARGET.TypeId <> SOURCE.ordertypeid
    OR TARGET.Created <> SOURCE.Created
    OR TARGET.Updated <> SOURCE.Changed)
THEN
UPDATE SET TARGET.CustomerId = SOURCE.customeridHash,
     TARGET.PackageId = SOURCE.packageid,
     TARGET.TypeId = SOURCE.ordertypeid,
     TARGET.Created = SOURCE.Created,
     TARGET.Updated = SOURCE.Changed
WHEN NOT MATCHED BY TARGET 
INSERT (
    Id, 
    CustomerId, 
    PackageId,
    TypeId,
    Created, 
    Updated
)
VALUES (
    SOURCE.orderidHash,
    SOURCE.customeridHash,
    SOURCE.packageid,
    SOURCE.ordertypeid,
    SOURCE.Created,
    SOURCE.changed
)
WHEN NOT MATCHED BY SOURCE THEN DELETE;

在上面的語句中，我應該在哪里有WHERE PackageId <> 0 ？ 當我在WHEN NOT MATCHED BY TARGET之后放置條件時，我收到錯誤消息：

MERGE 語句與 FOREIGN KEY 約束“FK_MyTargetTable_DimCustomer”沖突。 沖突發生在數據庫 MyDatabase、表 DimCustomer、列 Id。

MyTargetTable.CustomerId是DimCustomer.Id的 FK。

Answer 1

只是改變

USING MySourceTable AS SOURCE
to
using (select * from MySourceTable where  PackageId <> 0) as Source