In a SQL Server, two types of indexes exist ... As we can create only one clustered index so we need to delete the previous one. In order to delete the index, execute the following code. USE [test] GO ...

Consider the impact on disk space, insert/update/delete operations ... for optimization and adjustment. In SQL Server, the clustered index key is automatically used in non-clustered indexes.

For example, a table should have primary keys, identity columns, clustered and unclustered indexes ... revealing that method 1 is more cost-effective. Removing duplicates from a SQL Server table ...

Non-clustered indexes can be numerous in SQL Server 2008 I remember from my Sybase days that SQL Server tables could support up to 255 indexes. One clustered index and 254 non-clustered indexes.

The short answer is yes For the longer answer, let's start with the follow-up question: Do my end users care that it's slowing my SQL Server down ... with nine non-clustered indexes on it there ...