检查SQL Server 2005的索引密度和碎片信息

查询数据库中所有表的索引密度和碎片信息，以便为索引的重建和整理提供依据，也可以参考DBCC SHOWCONTIG，通常FRAGMENTATIOIN在30%以上建议重建，否则建议整理

declare @db_id int

select @db_id=db_id()

SELECT i.name                           AS indexname,

         o.name                           AS tablename,

         s.name                           AS schemaname,

         f.index_type_desc                AS indextype,

         f.avg_page_space_used_in_percent AS indexdensity,

         f.avg_fragmentation_in_percent   AS indexfragmentation,

         f.page_count                     AS pages

    FROM sys.dm_db_index_physical_stats(@db_id, NULL, NULL, NULL, 'SAMPLED') f

         INNER JOIN sys.objects o ON o.object_id = f.object_id

         INNER JOIN sys.schemas s ON o.schema_id = s.schema_id 

         INNER JOIN sys.indexes i ON f.object_id = i.object_id AND f.index_id = i.index_id

   WHERE page_count > 50

     AND f.index_id > 0

ORDER BY o.name, i.index_id

　　文章出至：

http://www.cnblogs.com/zping/archive/2009/09/24/1573252.html