在SQL Server 2008中备份

Question

我有一个包含1000万条记录的表。其中有一个名为YEAR的列，通过它可以跟踪记录的年份。是否可以像2010年那样仅备份2年的Backup（.bak） ＆仅2011年。

Answer 1

If your table is partitioned via the date column, and you have allocated individual filegroups for each Year per partition, then you can use a partial backup . Otherwise, SQL Server doesn't have this capability.

If Partitioning is an option, here is a great White Paper about Partitioned Table and Index concepts. Also, check out the MSDN article about Creating Partitioned Tables and Indexes .

Some options would be:

• bcp the data out
• Insert the data into a new table, in a new database and then backup the new DB.

Answer 2

create table table2(column1 varchar(50),column2 date)

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insert into table2(column1,column2)
select column1,column2 from table1
where table1.column2='2010' or table1.column2='2011'

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now take the backup of this table

Answer 3

I don't believe this is possible. A backup will backup the full database, with all objects and data.

One option would be to create a new database, with 1 table, and write a script to INSERT into this. Then backup this new database.

INSERT INTO [NewDB].dbo.tbl (Value1, Value2, Year)
SELECT Value1, Value2, Year
FROM [OldDB].dbo.tbl
WHERE Year IN (2010, 2011)