PostGIS 测试 - 圆弧（CIRCULARSTRING）

1.建表

CREATE TABLE circulartable ( 
  id SERIAL PRIMARY KEY,
  name VARCHAR(128),
   geom GEOMETRY(CIRCULARSTRING, 26910)
);

2.添加GIST索引

CREATE INDEX circulartable_gix ON circulartable USING GIST (geom); 

3.插入数据

INSERT INTO circulartable (name, geom) VALUES ('c1',
  ST_GeomFromText('CIRCULARSTRING(0 0, 1 1, 1 0)', 26910)
);

INSERT INTO circulartable (name, geom) VALUES ('c2',
  ST_GeomFromText('CIRCULARSTRING(2 0, 4 4, 3 0)', 26910)
);

4.QGIS中显示几何数据