Question

我第一次在桌子上创建了一个触发器。

当记录插入我的TableA时，触发器会将新记录插入同一个TableA。

当我插入符合语句中设置条件的记录时，触发器会被正确操作。
当我插入不符合这些条件的记录时，触发器不会被操作。
问题是，如果我现在再次添加符合条件的新记录，则不会再触发该触发器。当我插入不符合条件的记录时，它似乎停止工作。

如果我删除了第2点中添加的记录，如果不满足条件，则它会再次开始工作。很奇怪，无法理解。有什么建议吗？

场景：当客户第一次购买属于StockType=1的商品时，新产品将添加到同一发票中。它工作正常。

如果客户购买了不属于StockType=1的其他产品，则不会触发该触发器。这很好。

之后，触发器将不再被执行。这是原始的声明代码。

SET NOCOUNT ON;    
DECLARE @SerialNo NVARCHAR(50)

    SET @SerialNo = (SELECT TOP 1 SNSerialNoTx 
                     FROM T_SNSerialNo 
                     WHERE (SNStockItemID = 7058 AND SNInvoiceID_N IS NULL))

    INSERT INTO T_IIInvoiceItem (IIInvoiceID, IIProfitCenterID, IIStockItemID, IISerialNoTx_N, 
                                 IIQtyIn, IICostPriceCompsTx, IITaxBandIDsTx, IITaxRatesTx, 
                                 IIStockNoTx, IIStockItemTx, IIStockTypeID, IIStockTypeTx, 
                                 IIManufacturerID, IIManufacturerTx, IICustID)

        SELECT 
            IIInvoiceID, 23, 7058, @SerialNo, 
            IIStockTypeID, '-1:1@0', 0, 0,
            'Training.EUCS', 
            (SELECT 'Online Training (SN:'+@SerialNo+')'), 40,'Online Training', 7, 'Company', IICustID
             FROM inserted
             WHERE IIStockTypeID = 1 
               AND IICustID IN (SELECT IICustID
                                FROM T_IIInvoiceItem
                                INNER JOIN T_InInvoice ON InInvoiceID = IIInvoiceID
                                INNER JOIN T_CuCust ON CuCustID = IICustID
                                WHERE IIStockTypeID = 1 AND InTransStatusID = 0
                                GROUP BY IICustID
                                HAVING COUNT(IICustID) = 1)

触发代码

ALTER TRIGGER [dbo].[SerialTrigger] 
   ON  [dbo].[T_IIInvoiceItem] 
   AFTER INSERT

Answer 1

试试这个（每个@DeepDiver）：

SET NOCOUNT ON; 

--**********************************************   
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
--**********************************************   

DECLARE @SerialNo NVARCHAR(50)

    --    -----------------------------------------------------
    SELECT TOP 1 @SerialNo = SNSerialNoTx 
    FROM T_SNSerialNo 
    WHERE SNStockItemID = 7058 
        AND SNInvoiceID_N IS NULL ;

    --    -----------------------------------------------------
    ; WITH ins
    AS (
        SELECT IIInvoiceID, IIStockTypeID, IICustID
        FROM Inserted
        WHERE IIStockTypeID = 1
            AND IICustID IN (
                SELECT IICustID
                FROM T_IIInvoiceItem
                    INNER JOIN T_InInvoice ON InInvoiceID = IIInvoiceID
                    INNER JOIN T_CuCust ON CuCustID = IICustID
                WHERE IIStockTypeID = 1 
                    AND InTransStatusID = 0
                GROUP BY IICustID
                HAVING COUNT(IICustID) = 1
                )
        )
    --    -----------------------------------------------------
    INSERT INTO T_IIInvoiceItem (IIInvoiceID, IIProfitCenterID, IIStockItemID, IISerialNoTx_N, 
                                 IIQtyIn, IICostPriceCompsTx, IITaxBandIDsTx, IITaxRatesTx, 
                                 IIStockNoTx, IIStockItemTx, IIStockTypeID, IIStockTypeTx, 
                                 IIManufacturerID, IIManufacturerTx, IICustID)
    SELECT 
        IIInvoiceID
        , 23
        , 7058
        , @SerialNo
        , IIStockTypeID
        , '-1:1@0'
        , 0
        , 0
        , 'Training.EUCS'
        , 'Online Training (SN:'+@SerialNo+')'
        , 40
        ,'Online Training'
        , 7
        , 'Company'
        , IICustID
    FROM ins

SQL Server：触发器停止工作

1 个答案: