Spatial Data

External Article

Standardize data storage for geography spatial data type in SQL Server

  • Article

Geography is one of the spatial data types introduced in SQL Server 2008. One of the characteristic of the geography data type is that it can accommodate any supported geometry based on any supported spatial reference system in the same field. So if the data that is stored in a column of geography data type is not standardized, it can be a very tedious and resource intensive task to figure out the geometry and spatial reference system associated with each value. To deal with this issue, we need to standardize the data stored in a field of that has the geography data type and in this tip we will look at how to deal with this issue.

2010-10-04

2,316 reads

External Article

SQL Server 2008 Spatial Index Performance

  • Article

The institution I work with has decided to migrate their database system to SQL Server 2008. One of the applications uses geospatial data, which consists of millions of rows. I understand that their are indexes that can be used for geospatial data, but have not worked with them. What's the scoop on them?

2010-04-08

4,056 reads

Blogs

The CDO’s Playbook for AI Driven Decision Making

By

The New Arena of Leadership The role of the Chief Data Officer is no...

sp_snapshot – The easy way to take database snapshots of one or more databases – V3.0

By

Presenting you with an updated version of our sp_snapshot procedure, allowing you to easily...

SELECT *

By

SELECT * feels convenient, but in SQL Server it bloats I/O, burns network bandwidth,...

Read the latest Blogs

Forums

FARE LABS Pvt. Ltd. is an Indian proficiency testing laboratory.

By farelabs

India's top proficiency testing facility is Fare Labs. We employ particular metrics or evaluations...

Recursive Select - What is this really doing

By Leo.Miller

I've noticed several instances of what looks like a recursive insert with the format:...

Cleaning Up the Cloud

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Cleaning Up the Cloud

Visit the forum

Question of the Day

The Maximum Value in the Identity Column

I have a table with this data: 

TravelLogID CityID StartDate  EndDate
1           1      2025-01-01 2025-01-06
2           2      2025-01-01 2025-01-06
3           3      2025-01-01 2025-01-06
4           4      2025-01-01 2025-01-06
5           5      2025-01-01 2025-01-06
I run this code: 
SELECT IDENT_CURRENT('TravelLog')
I get the value 5 back. Now I do this: 
SET IDENTITY_INSERT dbo.TravelLog ON
INSERT dbo.TravelLog
(
    TravelLogID,
CityID,
    StartDate,
    EndDate
)
VALUES
(25, 5, '2025-09-12', '2025-09-17')
SET IDENTITY_INSERT dbo.TravelLog OFF
I now run this code. 
DBCC CHECKIDENT(TravelLog)
GO
INSERT dbo.TravelLog
(
    CityID,
    StartDate,
    EndDate
)
VALUES
(4, '2025-10-14', '2025-10-17')
GO
What is the value for TravelLogID for the row I inserted for CityID 4 and dates starting on 14 Oct 2025?  

See possible answers