删除触发器以将条目插入表中

Question

在我的DEV_SQL 数据库中创建了一个Customers_Audit 表，其中包含以下列：

[AuditID] int IDENTITY
[CustomerID] nchar(5)
[UserName] nvarchar(50)
[DeleteDate] smalldatetime

我正在尝试编写一个删除触发器，以在每次从Customers 表中删除一行时向Customers_Audit 表中插入一个条目，需要一些帮助哦聪明的人！

Answer 1

您需要这样的东西 - 只需将行插入您的 AFTER DELETE 触发器中的 Customers_Audit 并根据需要设置固定值：

CREATE TRIGGER trgAfterDelete 
ON dbo.Customer
AFTER DELETE
AS 
    -- insert into the audit table - explicitly specifying the column names to use
    INSERT INTO dbo.Customers_Audit(CustomerId, UserName, DeleteDate)
        -- make sure to respect the fact that the "Deleted" table might
        -- contain *multiple* rows if your DELETE statement deleted 
        -- more than a single row - use proper set-based code!
        SELECT
            d.CustomerId, d.UserName, SYSDATETIME()
        FROM 
            Deleted d