检查是否丢失索引-创新互联
SET
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SELECT TOP 30
ROUND(s.avg_total_user_cost * s.avg_user_impact * ( s.user_seeks
+ s.user_scans ),
0) AS [Total Cost] ,
s.avg_total_user_cost * ( s.avg_user_impact / 100.0 ) * ( s.user_seeks
+ s.user_scans ) AS Improvement_Measure ,
DB_NAME() AS DatabaseName ,
d.[statement] AS [Table Name] ,
equality_columns ,
inequality_columns ,
included_columns
FROM sys.dm_db_missing_index_groups g
INNER JOIN sys.dm_db_missing_index_group_stats s ON s.group_handle = g.index_group_handle
INNER JOIN sys.dm_db_missing_index_details d ON d.index_handle = g.index_handle
WHERE s.avg_total_user_cost * ( s.avg_user_impact / 100.0 ) * ( s.user_seeks
+ s.user_scans ) > 10 --and d.[statement] like '%%'
ORDER BY [Total Cost] DESC ,
s.avg_total_user_cost * s.avg_user_impact * ( s.user_seeks
+ s.user_scans ) DESC
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