SQL Server：MERGE導致無法將NULL值插入列

-1

我在SQL Server中使用以下代碼做了MERGE（原諒我，但我是新手，無法弄清楚如何正確縮進和格式化通過複製和粘貼我的代碼）：SQL Server：MERGE導致無法將NULL值插入列

MERGE INTO DW_Datawarehouse.[dbo].[DWF_WAREHOUSE] with (HOLDLOCK) AS target 
USING #DataSource AS Source 
     ON target.[DWF_WAREHOUSE_ORDER_NUM] = source.[DWF_WAREHOUSE_ORDER_NUM] 
     AND target.DWF_WAREHOUSE_ORDER_TYPE_CD = source.DWF_WAREHOUSE_ORDER_TYPE_CD 

WHEN MATCHED AND 
     (
     --all non-key fields, attributes and amounts 
     source.[DWF_WAREHOUSE_ORDER_DESC] <> target.[DWF_WAREHOUSE_ORDER_DESC] 
     or source.[DWF_WAREHOUSE_PICK_DATE_DAY] <> target.[DWF_WAREHOUSE_PICK_DATE_DAY] 
     or source.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM] <> target.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM] 
     or source.[DWF_WAREHOUSE_DIFF_QTY] <> target.[DWF_WAREHOUSE_DIFF_QTY] 
     ) 
    THEN 
     UPDATE 
     SET target.[DWF_WAREHOUSE_ORDER_DESC] = source.[DWF_WAREHOUSE_ORDER_DESC], 
      target.[DWF_WAREHOUSE_PICK_DATE_DAY] = source.[DWF_WAREHOUSE_PICK_DATE_DAY], 
      target.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM] = source.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM], 
      target.[DWF_WAREHOUSE_DIFF_QTY] = source.[DWF_WAREHOUSE_DIFF_QTY] 

WHEN NOT MATCHED BY TARGET THEN 
    INSERT ([DWF_WAREHOUSE_ORDER_DESC], [DWF_WAREHOUSE_PICK_DATE_DAY], 
      [DWF_WAREHOUSE_DAY_OF_WEEK_NUM], [DWF_WAREHOUSE_DIFF_QTY]) 
    VALUES (source.[DWF_WAREHOUSE_ORDER_DESC], source.[DWF_WAREHOUSE_PICK_DATE_DAY], 
      source.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM], source.[DWF_WAREHOUSE_DIFF_QTY]) 

WHEN NOT MATCHED BY SOURCE THEN 
    DELETE;

我收到錯誤：

Cannot insert the value NULL into column 'DWF_WAREHOUSE_ORDER_NUM', table 'DW_Datawarehouse.dbo.DWF_WAREHOUSE'; column does not allow nulls. UPDATE fails.

我將如何修改我MERGE代碼來避免這個錯誤？

來源

2016-12-21 Shawn_M

你有''上表DWF_WAREHOUSE' trigger'。您當前的「合併」查詢不會產生此錯誤 –

這意味着您需要爲列「DWF_WAREHOUSE_ORDER_NUM」指定一個值。您的INSERT語句不包含此列。 – DVT

聽起來好像數據源中的DWF_WAREHOUSE_ORDER_NUM爲空。您可以將數據源更改爲

SELECT * FROM #DataSource AS WHERE DWF_WAREHOUSE_ORDER_NUM IS NOT NULL

例子：

MERGE INTO DW_Datawarehouse.[dbo].[DWF_WAREHOUSE] with (HOLDLOCK) as target 
    USING 
(SELECT * FROM #DataSource AS WHERE DWF_WAREHOUSE_ORDER_NUM IS NOT NULL)AS Source 

    ON target.[DWF_WAREHOUSE_ORDER_NUM] = source.[DWF_WAREHOUSE_ORDER_NUM] 
    AND target.DWF_WAREHOUSE_ORDER_TYPE_CD = source.DWF_WAREHOUSE_ORDER_TYPE_CD 

WHEN MATCHED AND 
    (
    --all non-key fields, attributes and amounts 
    source.[DWF_WAREHOUSE_ORDER_DESC] <> target.[DWF_WAREHOUSE_ORDER_DESC] 
    or source.[DWF_WAREHOUSE_PICK_DATE_DAY] <> target.[DWF_WAREHOUSE_PICK_DATE_DAY] 
    or source.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM] <> target.[DWF_WAREHOUSE_DAY_OF_WEEK_NUM] 
    or source.[DWF_WAREHOUSE_DIFF_QTY] <> target.[DWF_WAREHOUSE_DIFF_QTY] 
    ) 
.....

來源

2016-12-21 04:41:48

SQL Server：MERGE導致無法將NULL值插入列

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