SQL SERVER 数据库备份

复制代码/**

批量循环备份用户数据库，做为数据库迁移临时用

*/

SET NOCOUNT ON

DECLARE @d varchar(8)

DECLARE @Backup_Flag NVARCHAR(10)

SET @d=convert(varchar(8),getdate(),112)

/自定义选择备份哪些数据库*/

--SET @Backup_Flag='UserDB' -- 所用的用户数据库SET @Backup_Flag='AlwaysOnDB' -- AlwaysOn 用户数据库

CREATE TABLE #T (ID INT NOT NULL IDENTITY(1,1),SQLBak NVARCHAR(MAX) NOT NULL)

IF @Backup_Flag='UserDB'

BEGIN

INSERT INTO #T (SQLBak)SELECT         'BACKUP DATABASE [' + name + '] TO DISK=''E:\Backup\' + NAME + '_Full_'+@d+'.bak'' WITH CHECKSUM,NOFORMAT,INIT,SKIP,COMPRESSION'  AS 'SQLBak'FROM    sys.databasesWHERE   database_id>4

END

IF @Backup_Flag='AlwaysOnDB'

BEGIN

INSERT INTO #T (SQLBak)SELECT          'BACKUP DATABASE [' + database_name + '] TO DISK=''E:\Backup\' + database_name + '_Full_'+@d+'.bak'' WITH CHECKSUM,NOFORMAT,INIT,SKIP,COMPRESSION'  AS 'SQLBak'FROM    sys.availability_databases_cluster

END

DECLARE

@Minid INT ,@Maxid INT ,@sql VARCHAR(max)

SELECT @Minid = MIN(id) ,

@Maxid = MAX(id)

FROM #T

PRINT N'--打印备份脚本..........'

WHILE @Minid <= @Maxid

BEGIN    SELECT  @sql = SQLBak    FROM    #T    WHERE   id = @Minid

----exec (@sql)

PRINT ( @sql )    SET @Minid = @Minid + 1END

DROP TABLE #T

复制代码原文地址