Use this script to get the list of all Indexes in your database and how effective they are.
select
Obj.name as 'Table/View Name',
Obj.type_desc As 'TableType',
Indx.name as 'IndexName',
Indx.index_id,
Indx.type_desc,
Indx.is_primary_key,
Indx.is_unique,
Indx.is_unique_constraint,
Indx.has_filter,
IUS.*,
IOS.*
from
sys.INDEXES Indx inner join sys.objects Obj on Obj.object_id=Indx.object_id
left join SYS.DM_DB_INDEX_USAGE_STATS IUS on Indx.index_id=IUS.index_id and IUS.object_id=Obj.object_id
left join
SYS.DM_DB_INDEX_OPERATIONAL_STATS (NULL,NULL,NULL,NULL ) IOS
ON Indx.[OBJECT_ID] = IOS.[OBJECT_ID]
AND Indx.INDEX_ID = IOS.INDEX_ID
where (Obj.type_desc='USER_TABLE' or Obj.type_desc='VIEW')
order by Obj.name,Indx.Name,
IUS.user_updates,IUS.user_lookups,IUS.user_seeks,IUS.user_scans DESC 
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Optimize SQL Server non-clustered indexes and queries by considering index fields, compound indexes and SQL Server statistics' impact on non-clustered indexes.
2008-03-05
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Indexes directly affect the performance of database applications. This article uses analogies to describe how indexes work. The estimated execution plan feature of the Query Window is utilized to compare the performance of two queries in a batch.
2007-12-04
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SQL Server 2000 has indexed views, which can greatly improve database performance. However there are a number of restrictions on building the view, including the restriction against outer joins. So how can this work? New author Jean Charles Bulinckx brings us a technique that can help you get around this restriction.
2005-05-19
23,059 reads
There is nothing spectacular about using indexes per say. However, on many occasions I have come across a variety of SQL coders that never consider validating that the index they think they are using is efficient or even being used at all. We can all put indexes on the columns that we think will be required to satisfy individual queries, but how do we know if they will ever be used. You see, if the underlying table data is constructed, contains, or is ordered in a particular way, our indexes may never be used. One of the factors around the use of an index is its clustering factor and this is what this article is about.
2004-12-23
3,412 reads