Why does removing a RID by creating a clustered index lose parallelism and slow down execution by 2X
If I remove a RID lookup by replacing 2 non-clustered indices (non unique) with 2 identical clustered indicies (non-unique) where there weren't any before, why does this query slow down by a factor ...
I know what table scan, clustered index scan and index seek is but my google skills let me down to find a precise explanation into non clustered index scans. Why and when a query uses a non clustered ...
I've read different ideas to set FILLFACTOR and then monitor fragmentation over time (#1: 5 Things About Fillfactor, #2: Database Maintenance Best Practices Part II – Setting FILLFACTOR). Instead of ...