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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

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

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

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

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

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

Realtime Analytics Why? Complexity Data Latency Cost

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

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

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

Columnstore Internals Columnstore Segments Batchmode Processing Filtered Columnstore indexes

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

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

Delta Store & Columnstore Demo

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

Dictionary Demo

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

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

Delete & update operations Demo

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

Columnstore Internals Columnstore Segments Batchmode Processing Filtered Columnstore indexes

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

Batchmode operations Demo

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

Non-Clustered Columnstore trick! Demo

Columnstore Internals Columnstore Segments Batchmode Processing Filtered Columnstore indexes

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?

Filtered NCCI Demo

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

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

Any Questions?

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