指令碼

CREATE TABLE mylocation ( 
  id SERIAL PRIMARY KEY,
  geom GEOMETRY(Point, 4326),
  name VARCHAR(128),
  x double precision,
  y double precision
); 
 
INSERT INTO mylocation (geom,name,x,y) VALUES (
  ST_GeomFromText('POINT(0.0001 0)', 4326),'zhangsan',0.0001,0
);
INSERT INTO mylocation (geom,name,x,y) VALUES (
  ST_GeomFromText('POINT(0.001 0)', 4326),'zhangsan',0.001,0
);
INSERT INTO mylocation (geom,name,x,y) VALUES (
  ST_GeomFromText('POINT(0.001 0)', 4326),'zhangsan',0.001,0
);
INSERT INTO mylocation (geom,name,x,y) VALUES (
  ST_GeomFromText('POINT(0.1 0)', 4326),'zhangsan',0.1,0
);



SELECT id, name,geom,x,y,   ST_DistanceSphere(
                      geom,
                      ST_GeometryFromText('POINT(0 0)')) distance
FROM mylocation
WHERE ST_DWithin(
  geom, 
  ST_GeomFromText('POINT(0 0)', 4326),
  0.001
)ORDER BY distance asc;;
 

查詢語句 下面距離單位為m

SELECT id, name,geom,x,y,   ST_DistanceSphere(
                      geom,
                      ST_GeometryFromText('POINT(0 0)')) distance
FROM mylocation
WHERE ST_DWithin(
  geom::geography, 
  ST_GeomFromText('POINT(0 0)', 4326)::geography,
  1000
) ORDER BY distance asc;

搜尋結果