與postgis相關的一些常用的sql
阿新 • • 發佈：2017-05-12
geo value lec insert type point nes table null
create table NODES (ID SERIAL not null,geometry geography(POINTZ, 4326) null); create table EDGES (ID SERIAL not null,geometry geography(LINESTRINGZ, 4326) null); insert into nodes(geometry) values(ST_GeographyFromText(‘SRID=4326; POINT(-110 30 40)‘)); insert into edges(geometry) values(ST_GeographyFromText(‘SRID=4326; LINESTRING(-110 30 40,11 22 33)‘)); alter table public.nodes alter column geometry set data type geography(PointZ,4326); select ST_AsText(geometry) from nodes; select ST_AsText(geometry) from edges;
與postgis相關的一些常用的sql