动态设置表结构方案（二）

承接（一）

CREATE TRIGGER [dbo].[trgUpd]
   ON  [dbo].[bigtable]
   AFTER UPDATE
AS 
BEGIN
   -- SET NOCOUNT ON added to prevent extra result sets from
   -- interfering with SELECT statements.
   SET NOCOUNT ON;

    -- Insert statements for trigger here
   SELECT * INTO #inserted FROM INSERTED;
   SELECT * INTO #deleted FROM DELETED;

   DECLARE @sql VARCHAR(MAX) = '';

   --删除旧纪录
   SET @sql = 'DELETE FROM [bigtable.tmp] WHERE Id IN(SELECT Id FROM #deleted)';
   EXEC(@sql);

   --插入新纪录
   DECLARE @cols VARCHAR(MAX) = '';
   SELECT
      @cols = @cols + ',' + C.name
   FROM sys.columns C
   WHERE C.[object_id] = OBJECT_ID('[bigtable]');
   SET @cols = SUBSTRING(@cols,2,LEN(@cols) - 1);

   SET IDENTITY_INSERT [bigtable.tmp] ON;

   SET @sql = 'INSERT INTO [bigtable.tmp](' + @cols + ') SELECT ' + @cols + ' FROM #inserted';
   EXEC(@sql);

   SET IDENTITY_INSERT [bigtable.tmp] OFF;
END

GO

CREATE TRIGGER [dbo].[trgDel]
   ON  [dbo].[bigtable]
   AFTER DELETE
AS 
BEGIN
   -- SET NOCOUNT ON added to prevent extra result sets from
   -- interfering with SELECT statements.
   SET NOCOUNT ON;

    -- Insert statements for trigger here
   SELECT * INTO #deleted FROM DELETED;

   DECLARE @sql VARCHAR(MAX) = '';

   --删除旧纪录
   SET @sql = 'DELETE FROM [bigtable.tmp] WHERE Id IN(SELECT Id FROM #deleted)';
   EXEC(@sql);

END

GO

换表名：
exec sp_rename '旧表名','新表名'