Question

下面是我的表架构和数据。

#Table Structure 
CREATE TABLE public.route
(
  name text NOT NULL,
  startpoint point NOT NULL,
  endpoint point NOT NULL,
  id integer NOT NULL DEFAULT nextval('route_id_seq'::regclass),
  CONSTRAINT route_pkey PRIMARY KEY (id)
)
WITH (
 OIDS=FALSE
);

#Table Data
INSERT INTO public.route (name, startpoint, endpoint, id) VALUES ('Atlantic',     (-73.848838,40.688299), (-73.824869,40.694831), 1);
INSERT INTO public.route (name, startpoint, endpoint, id) VALUES ('Guy Brewer', (-73.7991,40.708257), (-73.78543,40.688334), 2);

想要检查startpoint列中(-73.848838,40.688299)列是否有route

Answer 1

SELECT *
FROM route
WHERE startpoint ~= POINT '(-73.848838,40.688299)';

您可以使用GiST索引加快速度：

CREATE INDEX ON route USING gist (startpoint);

检查PostgreSQL中的表中是否存在坐标

1 个答案: