6ヶ月以上使われていないインデックスを抽出するSQL

SQLServerのユーザーDBで、6ヶ月以上使われていないインデックスを抽出し削除する事で、不要なインデックスを増やさない。定期メンテナンス用のSQL。


use (ユーザーDB名)

Declare @create_limit datetime
Select @create_limit = DATEADD(MONTH, -6, GETDATE()) -- 6ヶ月以上前に作成されたインデックスが対象

SELECT OBJECT_SCHEMA_NAME(i.[object_id]) as [Shema Name], OBJECT_NAME(i.[object_id]) AS [Table Name] ,i.name as [Index Name], o.create_date, o.modify_date
FROM sys.indexes AS i 
INNER JOIN sys.objects AS o ON i.[object_id] = o.[object_id]
WHERE i.index_id NOT IN ( 
SELECT s.index_id
FROM sys.dm_db_index_usage_stats AS s 
WHERE s.[object_id] = i.[object_id] 
AND i.index_id = s.index_id 
) 
AND o.[type] = 'U'
AND i.is_primary_key != 1 -- Primary Key を除外
AND i.is_unique_constraint != 1 -- Unique Key を除外
AND i.name is not null
AND o.create_date < @create_limit
AND OBJECT_SCHEMA_NAME(i.[object_id]) not in('capsim') -- 対象外のスキーマを除外
ORDER BY OBJECT_SCHEMA_NAME(i.[object_id]), OBJECT_NAME(i.[object_id]) ASC, create_date ;

use (ユーザーDB名)

Declare @create_limit datetime

Select @create_limit = DATEADD(MONTH, -6, GETDATE()) -- 6ヶ月以上前に作成されたインデックスが対象

SELECT OBJECT_SCHEMA_NAME(i.[object_id]) as [Shema Name], OBJECT_NAME(i.[object_id]) AS [Table Name] ,i.name as [Index Name], o.create_date, o.modify_date

FROM sys.indexes AS i

INNER JOIN sys.objects AS o ON i.[object_id] = o.[object_id]

WHERE i.index_id NOT IN (

SELECT s.index_id

FROM sys.dm_db_index_usage_stats AS s

WHERE s.[object_id] = i.[object_id]

AND i.index_id = s.index_id

)

AND o.[type] = 'U'

AND i.is_primary_key != 1 -- Primary Key を除外

AND i.is_unique_constraint != 1 -- Unique Key を除外

AND i.name is not null

AND o.create_date < @create_limit

AND OBJECT_SCHEMA_NAME(i.[object_id]) not in('capsim') -- 対象外のスキーマを除外

ORDER BY OBJECT_SCHEMA_NAME(i.[object_id]), OBJECT_NAME(i.[object_id]) ASC, create_date ;