• MySQL 위치 정보 조회
• MySQL :: MySQL 8.0 Reference Manual :: 11.4 Spatial Data Types
• MySQL :: MySQL 5.7 Reference Manual :: 12.17 Spatial Analysis Functions
• Well-known text representation of geometry - WKT
• [GIS] WKT(Well-Known Text) Geometry – GIS Developer

* geospatial - MySQL: Spatial Query to find whether a latitude/longitude point is located within a given boundary - Stack Overflow

SELECT ST_Within(ST_GEOMFROMTEXT('POINT(100.52438735961914 13.748889613522605)'),
             ST_GEOMFROMTEXT('POLYGON((100.49503326416016 13.766897133254545, 100.55940628051758 13.746555203977,100.56266784667969 13.72170897580617, 100.48885345458984 13.739051587150175,
             100.49503326416016 13.766897133254545))'))
AS geoFenceStatus;

• geospatial - MySQL: Spatial Query to find whether a latitude/longitude point is located within a given boundary - Stack Overflow
• Upgrading to MySQL 8.0 with Spatial Data | MySQL Server Blog
• Detecting Incompatible Use of Spatial Functions before Upgrading to MySQL 8.0 | MySQL Server Blog
• Geography in MySQL 8.0 | MySQL Server Blog