Last time we turned SQL Server into a Christmas tree. Every year around St Patrick's Day I find myself doing something I can't fully justify. This year that thing was using SQL Server's spatial viewer to draw a shamrock and a pint of Guinness. Hope you have a happy St Patrick's Day and a few […]
2026-03-16
2,113 reads
In this article we do a comparative analysis of the distance covered by two athletes during a race using the data of their GPX files.
2026-02-09
1,682 reads
Geographic information systems (GIS) play a critical role in emergency response planning and risk assessment. One of the key challenges in this field is determining whether a specific location falls within an area of interest. This capability is especially valuable for property and casualty (P&C) insurers, who need to assess their insured property exposure when severe weather events such as tornadoes occur.
2025-03-04 (first published: 2025-03-03)
2,693 reads
Learn how to use Python and pandas to compare two series of geospatial data and find the matches.
2021-03-23
5,354 reads
2020-04-14
563 reads
2017-05-01
880 reads
2017-03-31
942 reads
2016-03-09
1,166 reads
Spatial Data in SQL Server has special indexing because it has to perform specialised functions. It is able, for example, to break down an indexed space into a grid hierarchy by using a technique called tessellation. This is a rules-based system that, when you compare a shape to an index, works out how many cells in the the grid hierarchy are touched by that shape , and how deep down the grid hierarchy to search. There is powerful magic in Spatial Indexes as Surenda and Roy explain.
2015-04-15
7,242 reads
More and more applications require the handling of geospatial data. It is easy to store spatial data, but it takes rather more thought to retrieve and manipulate it. Tasks like searching neighborhoods, and calculating distances between points is often required from databases. But how do you start? Roy and Surenda take you through the basics.
2015-04-06
9,426 reads
By Brian Kelley
But as I've matured over the years, I came to realize that I needed...
By alevyinroc
I will be presenting my latest session, Documenting Your Work for Worry-Free Vacations, in-person...
By Steve Jones
I saw a question asking about the next sequence value and decided to try...
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