SELECT migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) AS improvement_measure ,'CREATE INDEX [missing_index_' + CONVERT(VARCHAR, mig.index_group_handle) + '_' + CONVERT(VARCHAR, mid.index_handle) + '_' + LEFT(PARSENAME(mid.statement, 1), 32) + ']' + ' ON ' + mid.statement + ' (' + ISNULL(mid.equality_columns, '') + CASE WHEN mid.equality_columns IS NOT NULL AND mid.inequality_columns IS NOT NULL THEN ',' ELSE '' END + ISNULL(mid.inequality_columns, '') + ')' + ISNULL(' INCLUDE (' + mid.included_columns + ')', '') AS create_index_statement ,migs.* ,mid.database_id ,mid.[object_id] FROM sys.dm_db_missing_index_groups migINNER JOIN sys.dm_db_missing_index_group_stats migs ON migs.group_handle = mig.index_group_handleINNER JOIN sys.dm_db_missing_index_details mid ON mig.index_handle = mid.index_handleWHERE migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) > 10 ORDER BY migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC
Note: The DMVs T-SQL scripts just show the best way for the current query against the database. it won’t tell you that you’ve had other indexes covered columns. Details, please see the link above.
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