Question

I’m trying to figure out how to build a SQL query in following way:

I have coordinates stored in my SQL Server database, and I’m trying to select all the records in a specified distance from point.

Any ideas how to make it done?

Answer 1

SELECT *
FROM YourTable
INNER JOIN
(SELECT (sqrt( ( xDestination - xOrigin)^2 + ( yDestination - yOrigin)^2 )) AS Distance
    FROM YourTable) AS computed ON YourTable.id = computed.id
WHERE computed.Distance = SpecifiedDistance

I dont know your exact definitions and how you would want to handle the input of the coordinates since I dont know if you are using a server side language to input the data so this is just a general example