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在SQL中,实现数据备份与恢复通常涉及以下几种方法:
完整备份(Full Backup)
BACKUP DATABASE
语句。BACKUP DATABASE [YourDatabaseName]
TO DISK = 'C:\Backup\YourDatabaseName.bak'
WITH FORMAT;
差异备份(Differential Backup)
BACKUP DATABASE
语句,并指定WITH DIFFERENTIAL
选项。BACKUP DATABASE [YourDatabaseName]
TO DISK = 'C:\Backup\YourDatabaseName_Diff.bak'
WITH DIFFERENTIAL;
事务日志备份(Transaction Log Backup)
BACKUP LOG
语句。BACKUP LOG [YourDatabaseName]
TO DISK = 'C:\Backup\YourDatabaseName_Log.bak';
文件组备份(Filegroup Backup)
BACKUP DATABASE
语句,并指定FILEGROUP
选项。BACKUP DATABASE [YourDatabaseName]
FILEGROUP = 'YourFileGroupName'
TO DISK = 'C:\Backup\YourFileGroupName.bak';
完整恢复(Full Recovery)
RESTORE DATABASE [YourDatabaseName]
FROM DISK = 'C:\Backup\YourDatabaseName.bak'
WITH NORECOVERY;
RESTORE LOG [YourDatabaseName]
FROM DISK = 'C:\Backup\YourDatabaseName_Log1.bak'
WITH NORECOVERY;
RESTORE LOG [YourDatabaseName]
FROM DISK = 'C:\Backup\YourDatabaseName_Log2.bak'
WITH RECOVERY;
差异恢复(Differential Recovery)
RESTORE DATABASE [YourDatabaseName]
FROM DISK = 'C:\Backup\YourDatabaseName.bak'
WITH NORECOVERY;
RESTORE DATABASE [YourDatabaseName]
FROM DISK = 'C:\Backup\YourDatabaseName_Diff.bak'
WITH RECOVERY;
文件组恢复(Filegroup Recovery)
RESTORE DATABASE
语句,并指定FILEGROUP
选项。RESTORE DATABASE [YourDatabaseName]
FILEGROUP = 'YourFileGroupName'
FROM DISK = 'C:\Backup\YourFileGroupName.bak'
WITH NORECOVERY;
RESTORE DATABASE [YourDatabaseName]
WITH RECOVERY;
通过以上方法,可以在SQL中实现数据的备份与恢复,确保数据的安全性和可恢复性。
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