如何將POINTS（LANG，LAT）存儲到PostGIS中的幾何類型列中？

我在PostGIS中創建了一個表itapp_cities，用於存儲城市的數據。我添加了一列location，數據類型爲geometry，用於存儲城市的longitude和latitude。當我運行以下INSERT查詢時，出現如下所示的錯誤。如何將POINTS（LANG，LAT）存儲到PostGIS中的幾何類型列中？

INSERT查詢：

INSERT INTO itapp_cities(city_id, city_name, city_code, state_id, location) 
    VALUES (DEFAULT,'Ada', 'ada-ok',37,POINT(34.774531000000003, -96.678344899999999));

表定義：

CREATE TABLE itapp_cities 
(
    city_id bigserial NOT NULL, 
    city_name character varying(100) NOT NULL, 
    city_code character varying(5) NOT NULL DEFAULT ''::character varying, 
    state_id bigint NOT NULL, 
    location geometry, 
    CONSTRAINT itapp_cities_pkey PRIMARY KEY (city_id), 
    CONSTRAINT fk_states FOREIGN KEY (city_id) 
     REFERENCES itapp_states (id) MATCH SIMPLE 
     ON UPDATE NO ACTION ON DELETE CASCADE 
)

錯誤：

ERROR: column "location" is of type geometry but expression is of type point 
LINE 2: VALUES (DEFAULT,'Ada', 'ada-ok',37,POINT(34.77453100000000... 
              ^
HINT: You will need to rewrite or cast the expression. 
********** Error ********** 

ERROR: column "location" is of type geometry but expression is of type point 
SQL state: 42804

如何將點值存儲在此列中？我是新來的PostGIS所以請原諒我這個愚蠢的問題

來源

2015-10-19 Praveen Rawat

您可以使用此功能與之匹敵ST_MakePoint()和設定的SRID (Spatial Reference System Identifier)與ST_SetSRID()：

SELECT ST_SetSRID(ST_MakePoint(longitude, latitude),4326)

或者當你連接之三面值反正喂字符串表示ST_GeomFromText()：

SELECT ST_GeomFromText('SRID=4326;POINT(34.774531 -96.6783449)')

上dba.SE

相關答案更多的細節和鏈接：

Order by distance

來源

2015-10-19 06:46:29

試試這個SQL，並與您插入SQL查詢

INSERT INTO itapp_cities(city_id, city_name, slug, state_id, location) 
    VALUES (DEFAULT,'Ada', 'ada-ok',37,st_GeomFromText('POINT(34.774531000000003 -96.678344899999999)', 312));

更多詳情，請通過這個link

來源

2015-10-19 06:46:18

如何將POINTS（LANG，LAT）存儲到PostGIS中的幾何類型列中？

回答

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