MySQL5.6でポリゴン内のLong/Latを検索

(Longitude, l.Latitude)だと思います 場所にいますか？

SQLデモ：

SELECT l.*,  ST_CONTAINS(p.boundary, POINT(l.Longitude, l.Latitude))
FROM locations l
CROSS JOIN polyThing p;

SELECT l.*
FROM locations l
JOIN polyThing p
  ON ST_CONTAINS(p.boundary, POINT(l.Longitude, l.Latitude))
 AND p.testarea = 'Test Area 1';

出力