Home > Query, SQL > BISQL # 100 – SQL Server with Spatial Data–Opportunity, Use, New Features and Example with few Queries

BISQL # 100 – SQL Server with Spatial Data–Opportunity, Use, New Features and Example with few Queries

Hi Friends,

I can’t imagine this is my 100th post in SQL Mentalist Blog. We will have review post for this all 100 SQL post, Thanks to all my readers, Subscribers and well-wisher’s.

In this blog information / Discussion we are going to review one of the Teched 2012 of presentation :

Taking Microsoft SQL Server into the World of Spatial Data Management of Michael Rys

In this article we are going to cover following topics for Spatial Data in SQL server

  • What are Business opportunity with Spatial Data in SQL server
  • Where we can use Spatial Data (In real world Business Scenarios )
  • What is Spatial Data ?
  • What are new features Introduced in SQL Server 2012
  • Featured New Type Features in SQL Server 2012
  • How to create spatial Object
  • What is Comprehensive Spatial Support
  • What are Spatial format and example
  • How to Load Spatial Data?
  • Resource for Spatial Data
  • Author Details for your direct querying
    What are Business opportunity with Spatial Data in SQL server

Increased user-sophistication with use Spatial Data

  • More data sources
  • More kinds of data
  • Integrated systems and mash-ups We can integrate special Data by using More data sources with different data and form powerful analysis reports.

Ubiquitous geographical technology

  • GPS
  • Online mapping services
  • Availability of geographical data

Where we can use Spatial Data (In real world Business Scenarios )

  • Real-estate development and analysis
  • Customer-base management and development
  • Environmental-related data impact, analysis, and planning
  • Financial and economic analysis in communities
  • Government-based planning and development analysis
  • Market segmentation and analysis
  • Scientific research study design and analysis image

What is Spatial Data ?

  • POINT
  • MULTIPOINT
  • LINESTRING
  • MULTILINESTRING
  • POLYGON
  • MULTIPOLYGON COLLECTION Following image will help you more :image

What are new features Introduced in SQL Server 2012

Circular arcs segmentsimage

  • CircularStrings
  • CompoundCurves
  • CurvePolygons

    All methods support circular arcs

    image

Circular arc support on a ellipsoidimage

  • Red – CircularString with 4 points
  • Yellow – LineString with the same 4 points

Featured New Type Features in SQL Server 2012

  • New relational methods added to geography-To match geometry
  • Invalid objects are accepted for geography-Make Valid will convert them to valid objects
  • Bigger than a hemisphere objects for geography-FULLGLOBE spatial object is available,“small” holes can be created
  • Increased precision from 27 to 48 bits
    for spatial computations
  • Persisted computed columns of a spatial type
  • Spatial Aggregators
  • New Index features
    How to create spatial Object

>>My GPS position is (@lat, @lon)

declare @g geography = geography::Point(@lat, @lon, 4326);

>>Get a region of 20m around me

declare @region geography = geography::Point(@lat, @lon).STBuffer(20);

>>Get all stores within distance X

select * from Stores s

where s.geo.STDistance(@me)<@x

>>Get all stores inside a city X

select * from Stores s

where s.geo.STIntersects(@myCityBoundary)=1

Try this on your SSMS

--My GPS position is (@lat, @lon)

declare @g geography = geography::Point(@lat, @lon, 4326);

--Get a region of 20m around me

declare @region geography = geography::Point(@lat, @lon).STBuffer(20);

--Get all stores within distance X

select * from Stores s

where s.geo.STDistance(@me)<@x

--Get all stores inside a city X

--select * from Stores s

where s.geo.STIntersects(@myCityBoundary)=1

What is Comprehensive Spatial Support

We can say geography data and geometry data is interrelation between actual reality and representation of same as follows :

image

What are Spatial format and example

  1. Well-Known-Binary
  2. Well-Known-Text
  3. GML With there respective example

Well-Known-Binary:

0x0103000000010000000500000000000000004CDDC000000000004C0D4100000000004CDD4

000000000004CDD4000000000C07A104100000000004CDD400000000000BD0F410000000000

88134100000000004CDDC000000000004C0D41

Well-Known-Text:

‘POLYGON(( -30000 240000, 30000 30000, 270000 30000, 260000 320000, -30000 240000))’

GML:

<Polygon xmlns="http://www.opengis.net/gml"&gt;

<exterior><LinearRing><posList>

-30000 240000 30000 30000 270000 30000 260000

320000 -30000 240000

</posList></LinearRing></exterior>

</Polygon>

How to Load Spatial Data?

With help of following way we can load spatial data

Shape2SQL

  • Download from SharpGIS.net
  • Built using the redistributable spatial library.
  • WPF project using the Builder API
  • Does not need to be on the same machine as the database instance

MapPoint Add-in for SQL Server

  • Free download
  • Needs Microsoft MapPoint (Free Trial available)

SAFE FME

  • Commercial grade, lots of options

ESRI ArcGIS

Pitney Bowes EasyLoader

Resource

Author Details for your direct querying 

image

Hope this helps !!

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