Tagged Questions

2
votes
0answers
33 views

Coerce columnstore to operate in batch mode

I want to try the column store index in SQL Server and im trying to get my queries to run in batch mode, i rewrote my query this way( it had an outer join before) but the execution plan still show ...
1
vote
0answers
89 views

Best Practice to update columnstore indexed tables

I have a table with aprox. 22 Bn rows, for each month I have made one partition that and each partition has two data files. I created the columnstore index on this table and the performance ...
1
vote
0answers
49 views

More logical Reads Than allocated Pages using Columnstore Index

I took a script from web to demonstrate column store index. It creates a table and inserts test data. use adventureworks2012; go drop table sales2; create table sales2 ( [id] int not null ...
6
votes
2answers
134 views

Does the order of columns in a columnstore index matter?

I have a table with ~200 million rows and ~15 columns in it. I am planning to create a COLUMNSTORE index on my table. Will there be any change in performance based on the order of columns that I use ...
9
votes
1answer
693 views

What's the anatomy of a columnstore index?

One of the new features in SQL Server 2012 codenamed Denali is the Columnstore index. I know a good bit about regular old row-store indexes, like the b-tree structure, differences in storage between ...