时间:2021-07-01 10:21:17 帮助过:87人阅读
- SELECT
- migs.avg_total_user_cost*(migs.avg_user_impact/ 100.0) *(migs.user_seeks + migs.user_scans) ASimprovement_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_columnsIS NOT NULL THEN ',' ELSE '' END
- + ISNULL(mid.inequality_columns, '')
- + ')'
- + ISNULL(' INCLUDE (' + mid.included_columns+ ')', '') AScreate_index_statement,
- migs.*, mid.database_id, mid.[object_id]
- FROM sys.dm_db_missing_index_groups mig
- INNER JOIN sys.dm_db_missing_index_group_statsmigs ON migs.group_handle= mig.index_group_handle
- INNER JOIN sys.dm_db_missing_index_detailsmid ON mig.index_handle= mid.index_handle
- WHERE 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