1. Introduction to SQL Spatial Data Location Analytics
In this session we will cover Spatial Data Types available in SQL Server. Then we will review the basics of spatial queries and the different methods to create points, lines, and polygons. Finally we will demo a few examples of location analytics and how to integrate into other data sets.
SQL Saturday – UNC Charlotte – Dec 7, 2019

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4. Agenda Introduction Documentation, Reference Links, and Books
OGC Methods and Spatial Reference Identifiers
Create a Point, Line, Polygon
GIS File Formats, QGIS Desktop to view
Demo - Wind Turbine, Highways, United States

5. Spatial Data Types Geometry Data Type Geography Data Type
Flat Map Euclidian coordinate system
Use when the curvature of the Earth does not influence measurements. (Driving across town)
Geography Data Type
Geodetic or round-earth coordinate system
Use when the measurements are long distances. (Flying across country)

6. Documentation and Reference Links
Microsoft SQL Documentation - Spatial Data
Introduction to SQL Server Spatial Data
SQL Server Spatial Indexes
MSSQLTips - SQL Server 2008 Geography and Geometry Data Types
SQLShack - Spatial data types in SQL Server

7. GIS Books - Alastair Aitchison
Expert SQL Server 2008 Development
Beginning Spatial with SQL Server 2008
Pro Spatial with SQL Server 11
Blog - 

8. Open Geospatial Consortium (OGC)
methods-on-geometry-instances?view=sql-server-2017
International not for profit organization
Quality open standard for the global geospatial community
Simple Feature Access
Part 1: Common Architecture
Part 2: SQL Option
More information at their web site

9. Spatial Reference Identifiers
SRIDs are used to locate geographical entities
The most common is GPS
Global Positioning System
World Geodetic System: WGS84 
SRID 4326
SRIDs are maintained by 
European Petroleum Survey Group (EPSG)
International Association of Oil and Gas Producers (IOGP)

10. GIS File Formats and QGIS Desktop viewer
Shapefile
Topologically Integrated Geographic Encoding and Referencing (TIGER)
GeoJSON
Keyhole Markup Language (KML)
Geography Markup Language (GML)
Quantum GIS (QGIS) -
Free and open source geographic information system

11. Demo -United States Wind Turbine and Highways

12. Demo – Execution Plan without index

13. Demo – Execution Plan with index

14. Tessellation
Spatial Clustered Index Seek
Table Valued Function

15. Without indexing

16. With indexing

17. Advanced Topics SQL Server Spatial Indexes
Envelope Aggregate
geography/envelopeaggregate-geography-data-type?view=sql-server-2017
Union Aggregate
geography-data-type?view=sql-server-2017
Convex Hull Aggregate
geography/convexhullaggregate-geography-data-type?view=sql-server-2017

18. Advanced Data Set - United States Power Grid
Electric Power Transmission Lines
Power Plants
Generating Units
Electric Substations
TIGER/Line Shapefile, 2017, nation, U.S., Current State and Equivalent National
Highway - 
Wind Turbine -

19. Advanced Data Set – API real-time
Flight Data
Marine Traffic

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