SQLserver查看索引使用情况

查索引使用情况:    https://www.cnblogs.com/sunliyuan/p/6559354.html

select db_name(database_id) as N'TOPK_TO_DEV',  --库名

        object_name(a.object_id) as N'TopProjectNew',  --表明

        b.name N'索引名称',

        user_seeks N'用户索引查找次数',

        user_scans N'用户索引扫描次数',

        last_user_seek N'最后查找时间',

       last_user_scan N'最后扫描时间',

        rows as N'表中的行数'

from sys.dm_db_index_usage_stats a join

      sys.indexes b

      on a.index_id = b.index_id

     and a.object_id = b.object_id

     join sysindexes c

      on c.id = b.object_id

where database_id=db_id('TOPK_TO_DEV')   ---改成要查看的数据库

 and object_name(a.object_id) not like 'sys%'

 order by user_seeks,user_scans,object_name(a.object_id)

 

 

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 sqlserver 索引优化 查碎片情况    参考网站:https://www.cnblogs.com/iiwen/p/6370420.html 

use [dingyue-test2] 
declare @table_id int
set @table_id=OBJECT_ID('fabu003')
dbcc showcontig(@table_id)