sql - 我可以找到当前/正在使用的索引吗

Question

我有以下内容：

SELECT name AS index_name,
       STATS_DATE(OBJECT_ID, index_id) AS StatsUpdated
FROM   sys.indexes

是否可以添加一些信息，以便我知道每个索引是否是当前的并且正在使用中？

另外我想在 SELECT 子句中返回索引所在的表？

Answer 1

我正在使用以下查询来查找是否使用了索引 - 如果搜索、扫描和查找为零，则不使用它。

SELECT TOP 25
o.name AS ObjectName
, i.name AS IndexName
, i.index_id AS IndexID  
, dm_ius.user_seeks AS UserSeek
, dm_ius.user_scans AS UserScans
, dm_ius.user_lookups AS UserLookups
, dm_ius.user_updates AS UserUpdates
, p.TableRows 
, is_disabled
,STATS_DATE(i.[OBJECT_ID], i.index_id) AS StatsUpdated
FROM sys.dm_db_index_usage_stats dm_ius  
INNER JOIN sys.indexes i ON i.index_id = dm_ius.index_id AND dm_ius.object_id = i.object_id   
INNER JOIN sys.objects o on dm_ius.object_id = o.object_id
INNER JOIN sys.schemas s on o.schema_id = s.schema_id
INNER JOIN (SELECT SUM(p.rows) TableRows, p.index_id, p.object_id 
                FROM sys.partitions p GROUP BY p.index_id, p.object_id) p 
        ON p.index_id = dm_ius.index_id AND dm_ius.object_id = p.object_id
WHERE OBJECTPROPERTY(dm_ius.object_id,'IsUserTable') = 1
AND dm_ius.database_id = DB_ID()   
AND i.type_desc = 'nonclustered'
AND i.is_primary_key = 0
AND i.is_unique_constraint = 0
ORDER BY (dm_ius.user_seeks + dm_ius.user_scans + dm_ius.user_lookups) ASC
GO