Sqlserver queries which indexes are underutilized

SELECT   OBJECT_NAME(S.[OBJECT_ID]) AS [OBJECT NAME],

I.[NAME] AS [INDEX NAME],

USER_SEEKS,

USER_SCANS,

USER_LOOKUPS,

USER_UPDATES

FROM     SYS.DM_DB_INDEX_USAGE_STATS AS S

INNER JOIN SYS.INDEXES AS I

ON I.[OBJECT_ID] = S.[OBJECT_ID]

AND I.INDEX_ID = S.INDEX_ID

WHERE    OBJECTPROPERTY(S.[OBJECT_ID],'IsUserTable') = 1

user_seeks bigint Number of searches performed by user queries .

user_scans bigint not used “seek” Number of scans of user queries for predicates .

user_lookups bigint The number of bookmark lookups performed by user queries .

user_updates bigint The number of updates performed through user queries . This includes “ Insert ”、“ Delete ” and “ to update ”, The operand representing the incomplete actual line . for example , If you delete 1000 That's ok , Then this count is incremented 1

The  user_updates   Columns are inserted on the underlying table or view 、 The maintenance counter of the index caused by the update or delete operation . You can use this view to identify indexes that are rarely used by applications . You can also use this view to identify the indexes that cause maintenance overhead . You may want to delete indexes that incur maintenance costs but are not used for queries or are only occasionally used for queries .

USER_SEEKS,

USER_SCANS,

USER_LOOKUPS Are all 0, Indicates that the index has not been used for a long time , You can delete .