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Basic Execution Plans Eugene Meidinger emeidinger@all-lines-tech @ sqlgene sqlgene

Basic Execution Plans Eugene Meidinger emeidinger@all-lines-tech.com @ sqlgene www.sqlgene.com. Thank you to our Sponsors!!!. Who is All Lines Technology?.

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Basic Execution Plans Eugene Meidinger emeidinger@all-lines-tech @ sqlgene sqlgene

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  1. Basic Execution Plans Eugene Meidinger emeidinger@all-lines-tech.com @sqlgene www.sqlgene.com

  2. Thank you to our Sponsors!!!

  3. Who is All Lines Technology? • All Lines Technology is a local woman owned solutions provider with corporate headquarters in Warrendale, PA, with offices in Cleveland, Columbus and Morgantown. • Our parent company, Fire Fighter Sales & Service Co.has been in business since 1946, supplying fire suppression and life safety products and services to over 15,000 customers in the tri-state area. • Customer service has been the cornerstone of our business for over 60 years. • Strong company foundation and financial stability achieving year of year profitable revenue growth.

  4. Who is LANtek? • Staffing – Named largest, local Staffing Firm in Western PA since 2011 • Hardware Break / Fix • Application Development • SharePoint Services • NOC / Help Desk Services • Network/LAN/WAN Design &Delivery • Datacenter Design &Architecture • PC Deployment • VDI and BYOD Solutions • Cloud Services, including LANtek hosted &MS Office 365 & Azure

  5. Who am I? • Accidental DBA • Graduated Penn State 2010 for IST • First Job was in BI department at Bayer • Head of small BI department at FF/ALT/Lantek • Certified in Querying SQL Server 2012 • Started speaking a year ago • Don’t go to the SQL Saturday after event! You’ll get drafted • Not an expert, just know enough to speak

  6. What are we going to talk about? • What is an execution Plan • How to view an execution plan • What does a plan look like • How to read one • Demo • Resources • Q/A

  7. What is an execution plan? • Instructions for how to process a query • Can think of it as a recipe • Created by query optimizer at run time • Execution plans are cached after the first run • Many different ways to process the same query • For trivial queries, a simple plan is used • Can be forced with hints • Don’t try to outsmart the database engine

  8. How to view the execution plan? • Go to Query • Click Include Actual Execution Plan • Or, Press Ctrl + M • Or click the Execution Plan Icon on the tool bar

  9. What does a plan look like?

  10. How to read an execution plan • Read from right to left and top to bottom • Icons represent operators • Operators have cost below them in % • Arrows represent data flow • Bigger arrows represent more data • Hover over icons and arrows for more detail

  11. Demo

  12. Resources • Adventure Works Database • Execution Plan Basics by Grant Fritchey • SQL Server Execution Plans, Second Edition by Grant Fritchey • Watch Brent Ozar Tune Queries by Brent Ozar

  13. Questions? Thank you!

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