SQL Server数据库误删恢复方法
SQL Server数据误删时，若数据库做过完整备份且恢复模式为完整，恢复非常简单，只需做一次事务日志备份，再还原到误删前时间点即可：
--backup database test to disk=N'd:ackup est.bak'
backup log test to disk=N'd:ackup est.trn' with norecovery
restore database test from disk=N'd:ackup est.bak' with norecovery,replace
restore log test from disk=N'd:ackup est.trn' with stopat=N'2013-06-20 21:41:00',recovery
backup log test to disk=N'd:ackup est.trn' with norecovery
restore database test from disk=N'd:ackup est.bak' with norecovery,replace
restore log test from disk=N'd:ackup est.trn' with stopat=N'2013-06-20 21:41:00',recovery
以上代码在SQL Server2000/2008测试通过，再强调一次，误删可以数据库回复的条件是数据库做过完整备份且恢复模式为完整。
常见问题
问：为什么在SQL Server2008执行backup log后数据库显示为正在还原且无法使用？
答：这是由于使用norecovery参数的缘故，待执行restore log(带recovery参数)后即可恢复正常，也可以单独执行下边语句让数据库恢复正常：
restore database test with recovery
