Question

我有一张桌子Employee：

CREATE TABLE [dbo].[Employee]
(
    [EmployeeCode] [int] NOT NULL,
    [FirstName] [varchar](50) NULL,
    [LastName] [varchar](50) NULL,
    [Email] [varchar](50) NULL,
    [Position] [varchar](30) NULL
)

每次{中的Employee_Audit（以及Position，Old Position和New Position）中有变化时，我都想在Timestamp表中记录更改{1}}表。

Employee

我该如何实现？

Answer 1

您基本上需要一个UPDATE触发器来检查Position值是否已更改-如果已更改，则将详细信息记录到Employee_Audit中：

CREATE OR REPLACE trgEmployeeUpdate
ON dbo.Employee 
AFTER UPDATE 
AS
BEGIN
    -- based on the Inserted and Deleted pseudo tables, join the rows
    -- that were updated and look for changes in "Position"
    INSERT INTO dbo.Employee_Audit (EmployeeCode, FirstName, LastName, Email, 
                                    PositionOld, PositionNew, [Date])
        SELECT
            i.EmployeeCode, i.FirstName, i.LastName, i.Email,
            d.Position, i.Position, SYSDATETIME()
        FROM
            Inserted i
        INNER JOIN
            Deleted d ON i.EmployeeCode = d.EmployeeCode
        WHERE
            i.Position <> d.Position    -- Position has changed
END

Answer 2

除了提到的触发器选项@marc_s之外，如果您不只是考虑位置，并考虑所有列更改审核，下面的选项可让您进行审核，而无需任何特定的编程需求。您可以查看它是否适合您的需求。

您可以想到SQL Server临时表。 Read on SQL Server Temporal Tables on MSDN。它们提供了透明的方式来审计行更改。
您还具有“更改数据捕获”选项，以跟踪列的历史更改。 Change Data Capture on MSDN

如何设置基于触发器的审核？

2 个答案: