I am trying to determine why the query optimizer in SQL Server is recommending creating a new index instead of using an existing index that appears to be sufficient for the query. First the table. ...
I have found that when a table has both clustered and non-clustered indexes (on different columns), the leaf level non-clustered pages, instead of pointing to the data row, point to the node of the ...
Why is the SQL Server query plan not using indexes in a query almost similar to one that uses indexes?
I have two UPDATE queries that are similar in structure, yet the SQL Server query plan for one shows indexes being used, and for the other it shows only a regular table scan. The following are the ...