1. Hidden Gems of SQL Server 2016
Denis Reznik
Hidden Gems of SQL Server 2016

2. Thank you to our AWESOME sponsors!

3. About Me Denis Reznik Kyiv, Ukraine Data Architect at Intapp, Inc.
Microsoft Data Platform MVP
Co-Founder of Ukrainian Data Community Kyiv (PASS Chapter)
PASS Regional Mentor, Central and Eastern Europe
Co-author of “SQL Server MVP Deep Dives vol. 2”

4. SQL Server 2016 Killer Features Hidden Features Query Store
Temporal Tables
JSON
PolyBase
Stretch Database
R Services
Always Encrypted
Hidden Features
Statistics Auto-Update
Input Buffers
Lightweight Profiling
Session Waits
Functions Stats
Query Hints

5. Statistics Auto-Update

6. ? Statistics SELECT * FROM Users WHERE Id BETWEEN 2100 AND 2500
800
2000
2800
4500
5400

7. Statistics Auto-Update
DEMO
Statistics Auto-Update

8. Statistics Update SQL Server 2014 and lower default behavior:
20% of rows + 500
SQL Server 2016
Dynamic threshold for tables
with rows
TF 2371 for lower versions

9. Input Buffers

10. Input Buffers session_id = 65 SELECT * FROM Users WHERE Id = 123
EXEC = 1
session_id = 65
SELECT * FROM Users WHERE Id = 123
session_id = 65
Session 65 INPUT BUFFER:
EXEC = 1
SELECT * FROM Users WHERE Id = 123

11. DEMO
Input Buffers

12. Lightweight Profiling

13. Lightweight Profiling
SQL Server 2014 – sys.dm_exec_query_profiles
SQL Server 2016/2014 SP1 – Live Query Statistics
Enable LQS in SSMS
SET STATISTICS XML ON
SET STATISTICS PROFILE ON
query_post_execution_showplan event
SQL Server 2016/2014 SP2 - query_thread_profile event
SQL Server 2016 SP1 – query_thread_profile/TF 7412
Lightweight query execution profiling
Session Level
Server Level

14. Lightweight Profiling
DEMO
Lightweight Profiling

15. Session Waits

16. LCK_M_* Waits Schedulers Runnable Queue Users 2 3 2 1 Suspended QueueId
Name 1
John Snow 2
Peter Partner 3
Jesse Pinkman 4
Jane Dow Id
Name 1
John Snow 2
Peter Partner 3
Kirill Nenahov 4
Jane Dow 3 2 1 X S
Suspended Queue 1 2 2
LCK_M_X 1
SELECT * FROM Users
WHERE Name LIKE 'K%'
LCK_M_X 2
UPDATE Users
SET Name = 'Jesse Pinkman'
WHERE Id = 3

17. DEMO
Session Waits

18. Functions Stats

19. Scalar Functions

20. DEMO
Functions Stats

21. Query Hints

22. Statistics
SELECT * FROM Users u
INNER JOIN Posts p
ON u.Id = p.OwnerUserId
WHERE u.DisplayName LIKE 'Jeff%'
Users A G L S T
ZZZZ
Posts 1
800
2000
2800
4500
5400

23. DEMO
Query Hints

24. SUMMARY Statistics Auto-Update Input Buffers Lightweight Profiling
Session Waits
Functions Stats
Query Hints

25. Thank You! Denis Reznik Twitter: @denisreznik
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