自动备份SQL Server数据库中用户创建的Stored Procedures

yxixi

为了避免意外丢失/损坏辛苦创建的Stored Procedures，或者想恢复到以前版本的Stored Procedures，这样提供了一个有效方法，可以自动将指定数据库中的Stored Procedures进行备份。
1. 在特定的数据库（建议为SQL Server的master数据库）上创建数据表StoredProceduresBackup，用来保存备份的Stored Procedures。
IF OBJECT_ID('StoredProceduresBackup') IS NOT NULL

DROP TABLE StoredProceduresBackup
GO

CREATE TABLE StoredProceduresBackup
(
AutoID INTEGER IDENTITY(1,1) PRIMARY KEY,
InsertDate DATETIME DEFAULT GETDATE(),
DatabaseName VARCHAR(50),
ProcedureName VARCHAR(50),
ProcedureText VARCHAR(4000)
)
GO

2. 创建Stored Procedure名为usp_ProceduresVersion，该Stored Procedure用来将需要备份Stored Procedures的备份到上述创建的数据表中。
其中主要访问sysobjects和syscomments系统表：
(1) sysobjects system table
Contains one row for each object (constraint, default, log, rule, stored procedure, and so on) created within a database. In tempdb only, this table includes a row for each temporary object.

(2) syscomments system table
Contains entries for each view, rule, default, trigger, CHECK constraint, DEFAULT constraint, and stored procedure. The text column contains the original SQL definition statements, which are limited to a maximum size of 4 MB. This table is stored in each database.

(3) source script of stored procedure.

/*
Name:usp_ProceduresVersion
Description:Back up user defined stored-procedures
Author:Rickie
Modification Log: NO

Description  Date Changed By
Created procedure 8/27/2004  Rickie
*/

CREATE PROCEDURE usp_ProceduresVersion @DatabaseName NVARCHAR(50)
AS
SET NOCOUNT ON

--This will hold the dynamic string.
DECLARE @strSQL NVARCHAR(4000)

--Set the string
--Only stored procedures
SET @strSQL = 'INSERT INTO master.dbo.StoredProceduresBackup(
DatabaseName,ProcedureName,ProcedureText )
SELECT ''' + @DatabaseName + ''', so.name, sc.text
FROM ' + @DatabaseName + '.dbo.sysobjects so
INNER JOIN ' + @DatabaseName + '.dbo.syscomments sc
ON so.id = sc.id
WHERE so.type = ''p''' + ' and so.status>0
Order By so.id '

--Execute the string
EXEC dbo.sp_executesql @strSQL
GO

3. 创建Job执行上述Stored Procedure
在SQL Server上创建Job，并设定运行计划，这样指定数据库的Stored Procedures就可以自动备份到上述数据表中。