1. Eugene Meidinger Intermediate Querying: Going Beyond Select * @sqlgene www.sqlgene.com emeidinger@all-lines-tech.com

2. About me Worked for All-Lines / Lantek for 4 years Business Intelligence team lead Went from SQL newb to SQL pro Certified in querying and administering SQL Server Spoken at Pittsburgh SQL User Group and SQL Saturdays

3. What is this talk about? Where do you go once you know the basics? Will be doing demos Feel free to interrupt Based on SQL Server 2012 Some functions are new

4. What we will cover Subqueries Window Functions Ranking functions Aggregate functions Analytic functions MERGE statement

5. What is a subquery? A query inside of a query

6. Where can you use subqueries? Column value From Clause Where Clause IN statement EXISTS statement Having Clause

7. Demo Slide - Subqueries

8. What is a windowing function? Applies a function OVER a WINDOW of rows Windows are grouped by PARTITIONs Some functions depend on an ORDERing

9. Ranking functions Row number Rank Dense Rank Ntile

10. Aggregate functions SUM, COUNT, MAX, etc Uses OVER for partitioning

11. Analytic functions First_value Last_value Lead Lag …and more

12. Demo Slide – Window Functions

13. What is the MERGE statement? Powerful tool for basic ETL Used to reconcile two data sources Great for UPSERTS

14. What are the parts of a merge statement? MERGE USING WHEN MATCHED WHEN NOT MATCHED BY TARGET WHEN NOT MATCHED BY SOURCE OUTPUT

15. Demo Slide – MERGE statement

16. Questions?