2. Rob Farley, LobsterPot Solutions
Microsoft Ignite 2015
11/23/2018 9:58 PM
Using Live Query Statistics to see the inner workings of your queries in SQL 2014 and 2016
Rob Farley, LobsterPot Solutions
DAT442
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3. About Rob Farley LobsterPot Solutions – Gold Partner
Microsoft Certified Master
Microsoft MVP
Microsoft Certified Trainer
APS/PDW Trainer
Author: Professional SQL Server 2012 Internals & Troubleshooting

4. What is LQS? Well let me show you… The Query Plan builds
as the query runs

5. How? sys.dm_exec_query_profiles …available in SQL 2014 SP1
SET STATISTICS PROFILE ON
SSMS 2016 then polls the DMV

6. What can we learn? All kinds of things! Blocking operators Join types
Spools
Learn how your query actually runs!

7. What about short-running queries?
Use a strobe-like method!
Loop over the query
Poll the DMV
Figure out what the results mean
LQS is not just for long-running queries
But don’t use it at all in production – only in dev/test

8. Complete your session evaluation on My Ignite for your chance to win one of many daily prizes.

9. Continue your Ignite learning path
Microsoft Ignite 2015
11/23/2018 9:58 PM
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© 2015 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.