2 Ağustos 2012 Perşembe

Which Indexes Are Being not Used-Which Tables Are Being not Used

 

SELECT

    QUOTENAME(s.name) + '.' + QUOTENAME(t.name) AS TableName,

    i.name AS IdxName,

    i.type_desc AS IdxType,

    ius.user_seeks,

    (ius.user_seeks*1.) / NULLIF((ius.user_seeks+ius.user_scans+ius.user_lookups),0) AS [%Seek],

    ius.user_scans,

    (ius.user_scans*1.) / NULLIF((ius.user_seeks+ius.user_scans+ius.user_lookups),0) AS [%Scan],

    ius.user_lookups,

    (ius.user_lookups*1.) / NULLIF((ius.user_seeks+ius.user_scans+ius.user_lookups),0) AS [%Lookup],

    ius.user_updates

FROM sys.indexes i

LEFT JOIN sys.dm_db_index_usage_stats ius

    ON  ius.object_id = i.object_id

        AND ius.index_id = i.index_id

        AND database_id = DB_ID()--Current DB

INNER JOIN sys.tables t

    ON t.object_id = i.object_id

INNER JOIN sys.schemas s

    ON t.schema_id = s.schema_id

WHERE

    t.type = 'U'

    AND t.is_ms_shipped = 0

ORDER BY ius.user_seeks + ius.user_scans + ius.user_lookups DESC

SELECT

    DB_NAME(ius.database_id) AS DBName,

    OBJECT_NAME(ius.object_id) AS TableName,

    SUM(ius.user_seeks + ius.user_scans + ius.user_lookups) AS TimesAccessed   

FROM sys.indexes i

INNER JOIN sys.dm_db_index_usage_stats ius

    ON  ius.object_id = i.object_id

        AND ius.index_id = i.index_id

WHERE

    ius.database_id = DB_ID()

GROUP BY

    DB_NAME(ius.database_id),

    OBJECT_NAME(ius.object_id)

ORDER BY SUM(ius.user_seeks + ius.user_scans + ius.user_lookups) DESC

 

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