I have a table with field Id (bigint, IDENTITY) as primary key and clustered index on it. I inserted 400 rows and saw execution plan. I got: the relative query cost for this insertion 36% and for this ...
I have to use Indexed views to reach performance. As I can see from this comparison table standard edition does not support indexed views. But BOL says: Indexed views can be created in any ...
After asking this question comparing sequential and non-sequential GUIDs, I tried to compare the INSERT performance on 1) a table with a GUID primary key initialized sequentially with ...
Can I have create an InnoDB table without a PK? If so, would a secondary index be used as the clustered index?
Is it possible to create an InnoDB table without a Primary Key? Since InnoDB tables are structured as clustered index around the PK, what would be the structure of a table without PK? Would that ...
Is 'Avoid creating a clustered index based on an incrementing key' a myth from SQL Server 2000 days?
Our databases consist of lots of tables, most of them using an integer surrogate key as a primary key. About half of these primary keys are on identity columns. The database development started in ...
This 2007 White Paper compares the performance for individual select/insert/delete/update and range select statements on a table organized as a clustered index vs that on a table organized as a heap ...
I need a short explaining of clustered index. What is a clustered index? What are best practices for using the clustered index?
I understand that there may be a difference in meaning or intent between the two, but are there any behavioral or performance differences between a clustered primary key and a clustered unique index?
I recently heard that the data pages in a clustered index aren't stored contiguously. Is this true? Perhaps data pages are normally stored contiguously with some exceptions to the rule? Or perhaps I ...