Display Geographic Data in Readable WKT Format

Convert Spatial Data to Well-Known Text (WKT)

Write a MySQL query to convert the spatial data in the location column to WKT format using ST_AsText.

Solution:

-- Retrieve the name of each location and convert the 'location' column data (stored as a spatial POINT) into Well-Known Text (WKT) format.
SELECT 

    -- Select the 'name' column to display the name of the location.
    name, 

    -- Use the ST_AsText function to convert the 'location' column (a spatial POINT) into its WKT representation. 
    -- The result is aliased as 'locationWKT' for clarity.
    ST_AsText(location) AS locationWKT

-- Retrieve data from the Locations table.
FROM Locations;

Explanation:

• Purpose of the Query:
• The goal is to represent spatial data in a human-readable text format.
• This demonstrates the use of ST_AsText to convert a geometry into WKT.
• Key Components:
• ST_AsText(location) : Converts the spatial data into a string.
• AS locationWKT : Assigns an alias to the output column.
• Real-World Application:
• Useful for debugging, data export, and integration with systems that require text-based geometry.

Notes:

• The output format adheres to the OGC WKT standard.

For more Practice: Solve these Related Problems:

• Write a MySQL query to convert the spatial column "coordinates" in "GeoLocations" to its WKT representation using ST_AsText.
• Write a MySQL query to retrieve the WKT format of spatial data in the "Regions" table and alias it as "wkt_geom".
• Write a MySQL query to convert the geometry column in "Parks" to WKT for data export purposes using ST_AsText.
• Write a MySQL query to display both the original spatial data and its WKT version from the "Routes" table side by side.

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