A type of index mostly used in SQL-Server, which aligns the data of a table with the index.
2
votes
2answers
403 views
Clustered monotonically increased index insert performance
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 ...
2
votes
2answers
673 views
Why is query using Clustered Index when it shouldn't?
Let us presume I have a table named Category in a SQL Server 2005 database. Category has category_id (bigint, identity) as its primary key and name (nvarchar(50)). There is obviously a clustered ...
7
votes
1answer
1k views
noexpand hint for non-enterpise edition and performance
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
...
3
votes
3answers
511 views
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 ...
11
votes
1answer
563 views
SQL Server - How are data pages stored when using a clustered 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 ...