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3. SQL Server Consultant, SQL Stijn
I get my kicks out of Performance tuning, but shiver at the sight of a Cube
Hobby’s
Football(soccer) & my English Bulldog
Stijn Wynants
SQL Server Consultant, SQL Stijn
Company
Independent Consultant at Kohera
/stijn-wynants
@SQLStijn
Stijn Wynants

4. The Records The History of Columnstore Indexes
What is Realtime Analytics
The Records
The Internals of Columnstore Indexes
How to get a performing Realtime Analytics Setup

5. History Of Columnstore Indexes
SQL Server 2012
Not Updateable
Non-Clustered
Limited datatypes & isolation levels & No constraints/Keys

6. History Of Columnstore Indexes
SQL Server 2014
Clustered Columnstore Index
Updateable
Compression Rates

7. History Of Columnstore Indexes
SQL Server 2016 SP1
Updateable & Filterable Non-Clustered Columnstore Index
Constraints & Keys
Columnstore On Inmemory Tables

8. The Records The History of Columnstore Indexes
What is Realtime Analytics
The Records
The Internals of Columnstore Indexes
How to get a performing Realtime Analytics Setup

9. Realtime Analytics
Why?
Complexity
Data Latency
Cost

10. Realtime Analytics How? Filtered Non-Clustered Columnstore Index
No Data Latency
Hot & Cold Data

11. Insert updates deletes
Hot & Cold Data
Insert updates deletes
Hot data
Cold Data

12. The Records The History of Columnstore Indexes
What is Realtime Analytics
The Records
The Internals of Columnstore Indexes
How to get a performing Realtime Analytics Setup

13. Columnstore Internals
Columnstore Segments
Batchmode Processing
Filtered Columnstore indexes

14. Columnstore Internals
Columnstore & Deltastore
Columnstore Segments
Table
Rowgroups
Column Segments
Columnstore

15. Columnstore & Deltastore
Columnstore Segments
Columnstore & Deltastore
Columnstore Segments & Deltastore
Open/Closed/Compressed/Tombstone
Bulk Insert vs Row Insert

16. Delta Store & Columnstore
Demo

17. Dictionaries Columnstore Segments Global & Local Dictionaries
Predicate Pushdown & Segment Elimination
Dictionary Sizes (16MB)

18. Dictionary
Demo

19. Columnstore and update operations
Columnstore Segments
Columnstore and update operations
Delete buffer & delete bitmap
Insert into deltastore
Updates in delta store

20. Columnstore and delete operations
Columnstore Segments
Columnstore and delete operations
Delete buffer & delete bitmap
Marking for deletion
Deletes in delta store

21. Delete & update operations
Demo

22. Summarize Columnstore Segments Columnstore = Rowstore & Columnstore!
Dictionaries can cause multiple segments
Deletes happen in internal structures depending on CCI type
Updates are actually delete insert

23. Columnstore Internals
Columnstore Segments
Batchmode Processing
Filtered Columnstore indexes

24. Batchmode Processing Batchmode Processing Batchmode Processing
1000 rows at a time
Parallel or Single threaded
Great read performance enhancement!

25. Batchmode operations
Demo

26. Non-Clustered Columnstore trick
Batchmode Processing
Non-Clustered Columnstore trick
Filtered empty Columnstore
Batchmode when there is no data in columnstore
Cheapest performance enhancement!

27. Non-Clustered Columnstore trick!
Demo

28. Columnstore Internals
Columnstore Segments
Batchmode Processing
Filtered Columnstore indexes

29. Filtered Non-Clustered Columnstore
Filtered Columnstore indexes
Filtered Non-Clustered Columnstore
What happens when we update/insert a value?
What happens when we delete a value?
What happens when we select data?

30. Filtered NCCI
Demo

31. The Records The History of Columnstore Indexes
What is Realtime Analytics
The Records
The Internals of Columnstore Indexes
How to get a performing Realtime Analytics Setup

32. Realtime Analytics Scenario’s
OLTP & OLAP on Clustered Columnstore Index
OLTP & OLAP on Non-Clustered Columnstore Index
OLTP & OLAP on Filtered Non-Clustered Columnstore Index
OLTP & OLAP on Inmemory Columnstore Index

33. Any Questions?

34. SQLRelay.co.uk/feedback
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