SQL Server - 使用表觸發器記錄表插入，更新，刪除行數

除了表觸發器的基本知識，本篇還使用了一下知識點。

  1.    如何使用sql獲取當前session 用戶名和機器名

Select CURRENT_USER,Host_name()

  2.    如何在表觸發器中獲取當前表名稱

SELECT OBJECT_SCHEMA_NAME( parent_id ) + '.' + OBJECT_NAME( parent_id )  FROM sys.triggers

 

觸發器完整代碼

ALTER TRIGGER dbo.DimTest_AdutitTriger
   ON  dbo.DimTest
   AFTER INSERT,DELETE,UPDATE
AS
BEGIN
                SET NOCOUNT ON;
                declare @tbName varchar(256)
                SELECT @tbName = ‘dbo.DimTest’
                DECLARE @action as varchar(20), @Count int = 0 ;
    SET @action = 'INSERT'; -- Set Action to Insert by default.

    IF EXISTS(SELECT * FROM DELETED)
    BEGIN
        SET @action =
            CASE
                WHEN EXISTS(SELECT * FROM INSERTED) THEN 'UPDATE' -- Set Action to Updated.
                ELSE 'DELETE' -- Set Action to Deleted.      
            END
    END
    ELSE
        IF NOT EXISTS(SELECT * FROM INSERTED) RETURN; -- Nothing updated or inserted.
                IF ( @action = 'INSERT' or @action ='UPDATE')
                BEGIN
                                set @Count = (select count(*) from INSERTED)
                END
                IF  @action = 'DELETE'
                BEGIN
                                set @Count = (select count(*) from DELETED)
                END
                insert into dbo.AuditTable
                select getdate(),CURRENT_USER,Host_name(),null,@tbName,'dim',@action,@Count
END
GO