如何更新不同表上的 AFTER INSERT 触发器内的表？

Question

我有一个表 DISPENSE_DOSAGES 并在此表上创建了一个 AFTER INSERT 触发器。在该触发器中，我正在尝试更新另一个表DISPENSE_DRUGS，该表具有与INSERTED 表匹配的行。当一行插入DISPENSE_DOSAGES 时，触发器成功触发，但它不更新DISPENSE_DRUGS 中的行。我知道这条线正在产生问题。

WHERE [DISPENSE_ID] IN (SELECT [DISPENSE_ID] FROM INSERTED)

上述代码中的(SELECT [DISPENSE_ID] FROM INSERTED) 行正在生成问题。

我知道触发器需要批量插入并尝试了游标解决方案，但它对我不起作用。

这是触发器的代码

CREATE TRIGGER [dbo].[TRG_DISPENSE_DOSAGES]
ON [dbo].[DISPENSE_DOSAGES] 
AFTER INSERT     
AS
BEGIN
    IF (EXISTS (SELECT [DISPENSE_ID]
                FROM INSERTED
                WHERE [DISPENSE_ID] IN (SELECT [DISPENSE_ID] 
                                        FROM [DISPENSE_DOSAGES]
                                        WHERE [SEPARATE_ITEM] = 1)))
    BEGIN
        UPDATE [dbo].[DISPENSE_DRUGS]
        SET QUANTITY_DISPENSED = 0,
            QUANTITY_OWED = QUANTITY_PRESCRIBED
        WHERE [DISPENSE_ID] IN (SELECT [DISPENSE_ID] FROM INSERTED)  --This line generates issue
    END
END

Answer 1

我认为您唯一的问题是您创建触发器的表格。

试试这个，正如你所说的，你正在 DISPENSE_DOSAGES 创建触发器，但在你的创建触发器中你写了 'DISPENSE_DRUGS, and because of this on any insertion inDISPENSE_DOSAGES` 触发器不起作用，因为它实际上不起作用。

    CREATE TRIGGER [dbo].[TRG_DISPENSE_DRUGS]
        ON [dbo].[DISPENSE_DOSAGES] AFTER INSERT     
    AS
    BEGIN
        IF (EXISTS (SELECT [DISPENSE_ID]
                    FROM INSERTED
                    WHERE 
                    [DISPENSE_ID] IN (SELECT [DISPENSE_ID] FROM [DISPENSE_DOSAGES]
                        WHERE [SEPARATE_ITEM] = 1)))
                            BEGIN
                                UPDATE 
                                [Integra].[dbo].[DISPENSE_DRUGS]
                                SET QUANTITY_DISPENSED = 0,QUANTITY_OWED = QUANTITY_PRESCRIBED
                                WHERE [DISPENSE_ID] IN (SELECT [DISPENSE_ID] FROM INSERTED)  --This line generates issue
                            END
    END