En esta sesión vamos a ver la organización de los índices además de como ejecutar estrategias como index coverages e identificar cuales son las prácticas que nos evita la utilización de los índices.

1. Indices y las mejoras del desempeño
10 de Septiembre (12 pm GMT -5)
Kenneth Ureña
Resúmen:
En esta sesión vamos a ver la organización de los
índices además de como ejecutar estrategias
como index coverages e identificar cuales son las
prácticas que nos evita la utilización de los índices.
Próximos Eventos
Aprendamos DAX
17 de Septiembre
José Ahias López Portillo
Configurando réplicas de
Lectura de SQL-Server AlwaysOn
24 de Septiembre
Carlos Rojas
Recuperación de desastres
apartir de respaldos
1 de Octubre
Kenneth Ureña
Está por comenzar:

2. Indices y las mejoras del desempeño
10 de Setiembre 2014
Kenneth Ureña
MCSA| MCITP | MCTS
PASS Spanish Virtual Chapter Lead

3. Agenda
El viaje de una transacción
Indices
Buenas practices de codificación

4. EL VIAJE DE UNA TRANSACCIÓN

5. Actual vacio
Truncado
Virtual
Log
File
- Aceso Secuencial
- Solo 1 archive activo
- Recomendado
Raid 1 ó 1 + 0
- Commit, backup log
trigger I/O
- Acceso aleatorio
- Multiple archivos activos
- Recomendado Raid 1/1+0
5+0 / 5
- Checkpoint, backup, cargar /
descargar Cache
lleno vacio lleno vacio
vacio lleno vacio lleno

6. INDEXACIÓN

7. Table structure Indexes and Organization
Image from
SQL server 2008 books online

8. Heap Table Indexes and Organization
Image from:
SQL server 2008 books online

9. Clustered Table Indexes and Organization
Image from:
SQL server 2008 books online

10. Clustered (example)
Image from:
http://www.sqlservercentral.com/images/4695.jpg

11. NonClustered Indexes and Organization
Index
Image from:
SQL server 2008 books online

12. Column Index
Image from
http://magenic.com/

13. Data access patters
Seek
Scan
Bookmark Lookup

14. Data access patters
DEMO

15. CODING BEST PRACTICES

16. Coding Best Practices
Maximize coverage
Avoid conversions (implicit/explicit)
Avoid row by row access (cursor pattern)
Avoid unnecessary sorting
Choose the right index for the expected data pattern access method

17. Q&A
Kenneth Ureña
http://www.sqlcr.com
@sqlcr
/SpanishPASSVC

18. Manténgase conectado a nosotros!
Visítenos en http://globalspanish.sqlpass.org
18
/SpanishPASSVC
lnkd.in/dtYBzev
/user/SpanishPASSVC
/SpanishPASSVC

19. PASS Community News
August 2014

20. Planning on attending PASS Summit 2014? Start saving
today!
• The world’s largest gathering of SQL Server & BI professionals
• Take your SQL Server skills to the next level by learning from the world’s SQL
Server experts, in 190+ technical sessions
• Over 5000 attendees, representing 2000 companies, from 52 countries,
ready to network & learn
Ask your Chapter Leader how to
save $150 off registration!
$1,895
UNTIL SEPTEMBER 26, 2014

21. PASS Virtual Chapters Listing
Check out the sqlpass.org for more information on all the Virtual Chapters:
• Application Development
• Big Data
• Book Readers
• Business Analytics
• Business Intelligence
• Cloud
• Data Architecture
• Database Administration
• DBA Fundamentals
• Excel BI
• Healthcare
• High Availability and Disaster Recovery
• InMemory
• Master DataData Quality
• Oracle SQL
• Performance
• Powershell
• Professional Development
• Security
• Virtualization
• Women in Technology
• Global Chinese
• Global French
• Global Hebrew
• Global Italian
• Global Portuguese
• Global Russian
• Global Spanish

22. Virtual Chapter Meetings – August
VIRTUAL CHAPTER MEETING TOPIC
DBA Fundamentals Aug 5 11:00– 12:00 CDT (UTC -05:00) Rolling Upgraders, The Easy Way
Presented by Argenis Fernandez
Global Spanish Aug 6 12:00-12:30 (UTC -05:00) Los Caso de Uso Para In-Memory OLTP
Presented by Warner Chaves
Global Hebrew Aug 10 17:30-18:30 JDT (UTC +02:00) Take Your SQL Server Development
Process Forward!
Presented by Itai Binyamin
Professional
Development
Aug 12 12:00-13:00 EDT (UTC -04:00) Bridging the Communication Gap
Between DBA and Developer
Presented by Robert Davis
High Availability and
Disaster Recovery
Aug 12 12:00-13:00 CDT (UTC -05:00) Mirroring Start to Finish
Presented by Ryan Adams

23. Virtual Chapter Meetings – August
VIRTUAL CHAPTER MEETING TOPIC
Global Spanish Aug 13 12:00-13:00 (UTC -05:00) Haciendo Preguntas Básicas en Power
BI
Presented by Andrei Garzon
Excel Business
Intelligence
Aug 14 11:00-12:00 EDT (UTC-04:00) Advanced Analytics: Excel Solver
Presented by Dan Fylstra
Business Intelligence Aug 14 11:00-12:00 EDT (UTC -04:00) Continuous Integration for Reporting
Services
Presented by Nat Sundar
DBA Fundamentals Aug 19 11:00-12:00 CDT (UTC -05:00) The Roadmap to Better Performance:
Reading Query Plans
Presented by Erin Stellato
Global Spanish Aug 20 12:00-12:30 (UTC -05:00) Fundamentos sobre lost indices end
SQL
Presented by Enrique Puig

24. Virtual Chapter Meetings – August
VIRTUAL CHAPTER MEETING TOPIC
Global Russian Aug 20 15:00-16:30 (UTC +03:00) SSIS - Повышение
производительности обработки
потоков данных
Global French Aug 21 20:00-21:00 RST (UTC +01:00) Power BI Hybride avec la Passerelle de
Gestion de Données
Presented by Jean-Pierre Riehl
Business Analytics Aug 21 12:00-13:00 CDT (UTC -05:00) Looking Through the Windshield:
Creating forward-looking Dashboards
and KPI’s
Presented by Brian Larson
Business Intelligence Aug 27 12:00-13:00 GMT (UTC-00:00) Intro to R
Presented by Stephanie Locke
Global Spanish Aug 27 12:00-13:00 (UTC-05:00) Visualización de Big Data Con Power
View
Presented by Eduardo Castro

25. Upcoming SQLSaturdays
Upcoming North America Events Upcoming International Events
• Aug 2 #324 Baton Rouge
• Aug 9 #304 Indianapolis
• Aug 23 #328 Birmingham
• Aug 23 #309 Oklahoma City
• Sep 6 #320 Raleigh
• Sep 13 #300 Kansas City
• Sep 20 #331 Denver
• Sept 20 # 340 San Diego
• Aug 30 #327 Johannesburg
• Aug 30 #317 Oslo
• Sep 6 #301 Cape Town
• Sep 13 # 323 Paris
• Sep 20 #290 Kiev
• Sep 20 #310 Dublin
• Sep 27 #325 Sao Paulo
Visit www.sqlsaturday.com to
register for an event near you!

26. 26
Volunteering with PASS
Volunteer Today!
Now it’s easier than ever to volunteer with PASS.
Let us know your volunteer preferences by updating the
“myVolunteering” section of your myPASS profile.
PASS would not exist without our passionate, dedicated,
and hardworking volunteers from around the globe.

27. 27
Volunteering with PASS
Outstanding Volunteer Award
Do you know a volunteer that has gone
above and beyond recently?
Nominate them for the monthly OVA.
VolunteerRecognition@sqlpass.org
PASSion Award
The highest of PASS accolades presented
yearly to a volunteer.
Nominations will open in August 2014.
Stay tuned!

28. Stay Involved!
• Sign up for a free membership today at sqlpass.org
• Linked In: http://www.sqlpass.org/linkedin
• Facebook: http://www.sqlpass.org/facebook
• Twitter: @SQLPASS
• PASS: http://www.sqlpass.org

29. Programa de Reconocimiento
Programa de Voluntario Sobresaliente
• PASS le invita a nominar a su voluntario favorito para ser “Voluntario Sobresaliente del Mes”
• Enviar nominaciones en todo momento a: VolunteerRecognition@sqlpass.org
Favor proveer:
• Información de contacto del nominado,
• una lista breve de los programas de PASS que a participado el nominado
• los años que lleva activo en la comunidad
• una corta descripción por el cual considera que esta persona debe ser reconocida
• Los nominados seleccionados serán anunciados en la edición del boletín PASS Connector y recibirán un
certificado de apreciación.

30. Aprendamos DAX
17 de Septiembre (12 pm GMT -5)
José Ahias López Portillo
Resúmen:
En esta sesión veremos los conceptos básicos de como
programar consultas DAX y algunas de las funciones mas
útiles que podrían salvarnos en un apocalipsis de
generación de consultas complejas en modelos tabulares.
Próximo Evento