Necessary Evils, Building Optimized CRUD Procedures

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Every developer loves them and a lot of DBAs hate them. But there are many and valid reasons for creating generic SELECT, INSERT, UPDATE, and DELETE procedures. In this session, we’ll go through designing CRUD procedures that utilize new and existing SQL features to create CRUD procedures that are optimized for performance.

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Necessary Evils, Building Optimized CRUD Procedures

  1. 1. Necessary Evils, Building Optimized CRUD Procedures
  2. 2. Introduction Jason Strate e: jstrate@pragmaticworks.com e: jasonstrate@gmail.com b: www.jasonstrate.com t: StrateSQL Resources jasonstrate.com MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  3. 3. About Pragmatic Works • • • • • • • Industry leaders in Microsoft BI and SQL Server Platform SQL Server Professionals - PASS Board of Directors, Speakers, Authors and MVP’s National Sales Team Divided by Microsoft Territories National System Integrator (NSI) Gold Certified in Business Intelligence and Data Platform Platform Modernization/Safe Passage Premier Partner for PDW SI Partner Program MS PDW Partner of Year FY13 Frontline Partnership Partner of the Year for Big Data Executive sponsor - Andy Mouacdie, WW sales director PDW • • Over 7,200 customers worldwide Over 186,000 people in PW database for demand generation MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  4. 4. Session Goals 1. Describe the uses for CRUD procedures in databases 2. Identify the common problems associated with CRUD procedures 3. Demonstrate methods for writing performant CRUD procedures MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  5. 5. What is CRUD? CREATE, READ, UPDATE, DELETE • • • • • • ABCD: add, browse, change, delete BREAD: browse, read, edit, add, delete QDIM: query, delete, insert, modify SAID: show, alter, insert, delete VEDAS: view, edit, delete, add, search VADE(R): view, add, delete, edit MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  6. 6. Code Generation • Many tools available: – T-SQL Script – Code Smith – Entity Framework – LINQ to SQL – NHibernate MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  7. 7. CRUD Issues? • Treat tables as objects – – – People? Relationships? Relationship Type? • Overly generic – All columns touched – One procedure to rule them all • Performance – Set versus Singleton – Index selection MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  8. 8. Perspectives MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  9. 9. Overview CREATE, UPDATE, AND DELETE MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  10. 10. CREATE CREATE = INSERT EXEC CRUD.FooInsert @Column1 = 'Value‘, @Column2 = 2 INSERT INTO dbo.Foo (Column1, Column2) VALUES(@Column1, @Column2) Issues: • Singleton insert • All columns affected MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  11. 11. UPDATE UPDATE = UPDATE EXEC CRUD.FooUpdate @Column1 = 'Value‘, @Column2 = 2 UPDATE dbo.Foo SET Column1 = @Column1 WHERE Column2 = @Column2 Issues: Singleton update All columns affected MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  12. 12. DELETE DELETE = DELETE EXEC CRUD.FooDelete @Column2 = 2 DELETE FROM dbo.Foo WHERE Column2 = Column2 Issues: • Singleton delete MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  13. 13. T-SQL Features • Performance – Table Valued Functions (TVF) – Table Valued Parameters (TVP) – XML document – Merge statement MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  14. 14. Demos CREATE, UPDATE, AND DELETE MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  15. 15. Overview READ MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  16. 16. READ • READ = SELECT EXEC CRUD.FooSelect @Column1 = NULL ,@Column2 = 2 SELECT Column1 ,Column2 FROM dbo.Foo WHERE (@Column1 IS NULL OR Column1 = @Column1) AND (@Column2 IS NULL OR Column2 = @Column2) Issues • Index selectivity MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  17. 17. Demo READ MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  18. 18. Summary 1. CRUD isn’t necessarily bad 2. Generic templates offer ability to tune and extend data model behind the scenes. 3. Be cautious in choosing a template for CRUD 4. Know what SQL Server is doing 5. Leverage RECOMPILE as needed MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  19. 19. Learn More About Performance MAKING BUSINESS INTELLIGENT www.pragmaticworks.com
  20. 20. For more information… Name: Jason Strate Email: jstrate@pragmaticworks.com Blog: www.jasonstrate.com Products BI products to covert to a Microsoft BI platform and simplify development on the platform. Services Speed development through training, and rapid development services from Pragmatic Works. Foundation Helping those who do not have the means to get into information technology achieve their dreams.

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