Bu yazıda SQL Server’da kullanılmayan Index’leri bulmak ile ilgili bilgi vermeye çalışacağım.

SQL Server’da bazı durumlarda kullanılmayan Index’leri bulmak isteyebilirsiniz.

Aşağıdaki kodu kullanarak siz de bu işlemi rahatlıkla yapabilirsiniz.

SELECT o.name AS ObjectName,
       i.name AS IndexName,
       i.index_id AS IndexID,
       dm_ius.user_seeks AS UserSeek,
       dm_ius.user_scans AS UserScans,
       dm_ius.user_lookups AS UserLookups,
       dm_ius.user_updates AS UserUpdates,
       p.TableRows,
       'DROP INDEX ' + QUOTENAME(i.name) + ' ON ' + QUOTENAME(s.name) + '.' + QUOTENAME(OBJECT_NAME(dm_ius.object_id)) AS 'drop statement'
FROM sys.dm_db_index_usage_stats dm_ius
    INNER JOIN sys.indexes i
        ON i.index_id = dm_ius.index_id
           AND dm_ius.object_id = i.object_id
    INNER JOIN sys.objects o
        ON dm_ius.object_id = o.object_id
    INNER JOIN sys.schemas s
        ON o.schema_id = s.schema_id
    INNER JOIN
    (
        SELECT SUM(p.rows) TableRows,
               p.index_id,
               p.object_id
        FROM sys.partitions p
        GROUP BY p.index_id,
                 p.object_id
    ) p
        ON p.index_id = dm_ius.index_id
           AND dm_ius.object_id = p.object_id
WHERE OBJECTPROPERTY(dm_ius.object_id, 'IsUserTable') = 1
      AND dm_ius.database_id = DB_ID()
      AND i.type_desc = 'nonclustered'
      AND i.is_primary_key = 0
      AND i.is_unique_constraint = 0
ORDER BY (dm_ius.user_seeks + dm_ius.user_scans + dm_ius.user_lookups) ASC;
GO

Herkese çalışma hayatında ve yaşamında başarılar kolaylıklar.