Assess Whether a Point Lies Within a Defined Area
Check if a Point is Within a Polygon
Write a MySQL query to verify if a given point lies inside a specified polygon using ST_Within.
Solution:
Explanation:
- Purpose of the Query:
- The goal is to determine whether a point is located within a polygon.
- This demonstrates the ST_Within function for spatial containment tests.
- Key Components:
- ST_Within(point, polygon) : Returns 1 (true) if the point is inside the polygon.
- Well-Known Text (WKT) format is used to define the point and polygon.
- Real-World Application:
- Useful for geofencing applications and spatial queries based on regions.
Notes:
- Ensure both geometries share the same spatial reference system.
For more Practice: Solve these Related Problems:
- Write a MySQL query to check if a given point is inside a polygon stored in the "Regions" table using ST_Within.
- Write a MySQL query to determine if a point generated by ST_GeomFromText falls within a dynamically defined polygon and return a boolean result.
- Write a MySQL query to verify containment of a point in the "Boundaries" table using ST_Within, aliasing the result as "inside".
- Write a MySQL query to filter records from "Zones" where a provided point lies within the polygon area stored in a spatial column.
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Previous MySQL Exercise: Find Locations Within a Radius.
Next MySQL Exercise: Create a Spatial Index on a Column.
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