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Feb 19th, 2018
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SQL 1.10 KB | None | 0 0
  1. SELECT
  2.   migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) AS improvement_measure,
  3.   'CREATE INDEX [missing_index_' + CONVERT (VARCHAR, mig.index_group_handle) + '_' + CONVERT (VARCHAR, mid.index_handle)
  4.   + '_' + LEFT (PARSENAME(mid.statement, 1), 32) + ']'
  5.   + ' ON ' + mid.statement
  6.   + ' (' + ISNULL (mid.equality_columns,'')
  7.     + CASE WHEN mid.equality_columns IS NOT NULL AND mid.inequality_columns IS NOT NULL THEN ',' ELSE '' END
  8.     + ISNULL (mid.inequality_columns, '')
  9.   + ')'
  10.   + ISNULL (' INCLUDE (' + mid.included_columns + ')', '') AS create_index_statement,
  11.   migs.*, db_name (mid.database_id) AS dbname, mid.[object_id]
  12. FROM sys.dm_db_missing_index_groups mig
  13. INNER JOIN sys.dm_db_missing_index_group_stats migs ON migs.group_handle = mig.index_group_handle
  14. INNER JOIN sys.dm_db_missing_index_details mid ON mig.index_handle = mid.index_handle
  15. WHERE migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) > 10
  16. ORDER BY migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC
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