How to find and backup unused sql tables through c#.net

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Hi,

Suppose i have 10 sql tables. but am using 3 tables regularly. remain 7 tables are not used.
How to find and backup unused sql tables based on start date and end date through c#.net.

thanks in advance.

Posted 30-Sep-11 20:57pm

Member 7831076

Updated 30-Sep-11 21:09pm

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André Kraak 1-Oct-11 3:05am

What are "unused SQL tables"?

Please share any relevant code with us, seeing the code might us help understand the problem you are facing.

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FastEvo8 · Answer 1 · 2011-10-03T11:25:00

SQL

SELECT DB_NAME( t.database_id) as DataBaseName, OBJECT_NAME ( t.object_id,t.database_id) as TableName,t.object_id
FROM	(SELECT	  
         ius.database_id
	,ius.object_id
	,SUM(ius.user_lookups+ius.user_scans+ius.user_seeks+ius.user_updates) as usage
FROM sys.dm_db_index_usage_stats ius
GROUP BY ius.database_id,ius.object_id
HAVING SUM(ius.user_lookups+ius.user_scans+ius.user_seeks+ius.user_updates)=0
	) t

This will give you all the tables that were not used since SQL Server instance started (please keep in mind that when the instance is restarted sys.dm_db_index_usage_stats will be reset to 0)

Mehdi Gholam · Answer 2 · 2011-09-30T21:36:00

The following script will give you a list of last updated indexes on tables which you can use to get the last updated tables.

SQL

SELECT
t.name AS Table_Name
,i.name AS Index_Name
,i.type_desc AS Index_Type
,STATS_DATE(i.object_id,i.index_id) AS Date_Updated
FROM
sys.indexes i JOIN
sys.tables t ON t.object_id = i.object_id JOIN
sys.partitions sp ON i.object_id = sp.object_id
and i.index_id = sp.index_id 
WHERE
i.type > 0 and 
sp.rows > 0
ORDER BY
t.name ASC
,i.type_desc ASC
,i.name ASC

The backup you will have to do yourself as the sql backup process does not support tables backup but full database backup.

How to find and backup unused sql tables through c#.net

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