用另外方法替代TRUNCATE TABLE
某些情况之下，我们需要做清除表的记录。可以使用TRUNCATE函数实现，并让自动增长的主键ID重新开始。但是如果遇上表与其它表有关联，即是说主键是其它表的外键时，使用这个函数清除表记录，会接收到一条Error的信息：
| Msg 4712, Level 16, State 1, Line 1 Cannot truncate table 'dbo.topic' because it is being referenced by a FOREIGN KEY constraint. |
我们是否有其它替代方法可以使用呢？答案是肯定的。Insus.NET有写了一个存储过程，即是使用DELETE 和 DBCC一起来完成。
你可以参考下列存储过程：
View Code
IF OBJECT_ID('[dbo].[InsusTRUNCATE]') IS NOT NULL
DROP PROCEDURE [dbo].[InsusTRUNCATE]
GO
CREATE PROCEDURE [dbo].[InsusTRUNCATE]
(
@TableName NVARCHAR(128),
@NewReseedValue INT
)
AS
EXECUTE ('DELETE FROM ' + @TableName)
DBCC CHECKIDENT(@TableName, RESEED, @NewReseedValue)
DROP PROCEDURE [dbo].[InsusTRUNCATE]
GO
CREATE PROCEDURE [dbo].[InsusTRUNCATE]
(
@TableName NVARCHAR(128),
@NewReseedValue INT
)
AS
EXECUTE ('DELETE FROM ' + @TableName)
DBCC CHECKIDENT(@TableName, RESEED, @NewReseedValue)
调用存储过程演示：
EXECUTE [dbo].[InsusTRUNCATE] 'dbo.topic',0
