SQL Server缺失索引查询

SELECT user_seeks * avg_total_user_cost * ( avg_user_impact * 0.01 )
AS [index_advantage] ,
migs.last_user_seek ,
mid.[statement] AS [Database.Schema.Table] ,
mid.equality_columns ,
mid.inequality_columns ,
mid.included_columns , migs.unique_compiles ,
migs.user_seeks ,
migs.avg_total_user_cost ,
migs.avg_user_impact
FROM sys.dm_db_missing_index_group_stats AS migs WITH ( NOLOCK )
INNER JOIN sys.dm_db_missing_index_groups AS mig WITH ( NOLOCK )
ON migs.group_handle = mig.index_group_handle
INNER JOIN sys.dm_db_missing_index_details AS mid WITH ( NOLOCK )
ON mig.index_handle = mid.index_handle
WHERE mid.database_id = DB_ID()
ORDER BY index_advantage DESC ;