Đoạn script tìm bad non-clustered index

SELECT OBJECT_NAME(s.[object_id]) AS [Table Name], i.name AS [Index Name], i.index_id,user_updates AS [Total Writes], user_seeks + user_sca...

The overhead of nonclustered index

Every nonclustered index incurs overheard when a table row is inserted or deleted, or when any of the nonclustered index key columns (or IN...