ST_GeomFromGML: Takes as input GML representation of geometry and outputs a PostGIS geometry object. ST_GeomFromKML: Takes as input KML representation of geometry and outputs a PostGIS geometry object ST_GeomFromText: Returns a specified ST_Geometry value from Well-Known ...
ST_AsEWKB(geometry)returns EWKB bytea ST_GeomFromGML(text)returns geometry ST_AsGML(geometry)returns GML text ST_GeomFromKML(text)returns geometry ST_AsKML(geometry)returns KML text ST_AsGeoJSON(geometry)returns JSON ...
update qiye_zdsys set geom = st_geomfromtext(ST_AsText(geom),4326) where st_srid(geom)=0; //查询在多边形区域内的数据,t2.geom是MULTIPLOYGON格式的多边形,t1.geom是坐标点 select t1.id from temp_gaoxin_qiye_address_location t1 LEFT JOIN cyyq_pq t2 on st_contains(t2.geom, t1.geom) ...
PG数据库的空间函数 计算两点间的空间距离 // ST_DistanceSphere 函数selectST_DistanceSphere(ST_SetSRID(ST_MakePoint(115.5894917,32.644148),4326),geom)FROMPUBLIC.dm Geometry类型转化为文本类型 // ST_AsText 函数输出结果格式:POINT(115.780783680223 33.8766619946554)selectST_AsText(geom)coordFROMPUBLIC.dm...
PG常用语句#创建表 create table abcde as select st_intersection(st_geometryfromtext(wkt,4490),geom) from 表名 where ST_Intersects(geom, st_geometryfromtext(wkt,4490)) = 't' #删除表 drop table…
text WKT = ST_AsText(geometry); geometry = ST_GeomFromWKB(bytea WKB, SRID); geometry = ST_GeometryFromText(text WKT, SRID); 示例 SELECT (ST_GeomFromText('POINT(-126.4 45.32)', 312), 'A Place'); 输出如下: (0101000020380100009A99999999995FC0295C8FC2F5A84640,"A Place") ...
_st_intersects(st_transform(ST_MakeEnvelope(" + leftTopX + "," + leftTopY + "," + rightBottomX + "," + rightBottomY + ",4326" + "),4326),geom) 4、多边形查询 SELECT gid,year,cc,gb,ec,name,type,cc,gb,ec,name,type,st_astext(geom) wkt FROM V_ARCP where ST_Intersects(st_...
SELECT ST_AsText(geom) FROM spatial_table; SELECT ST_Area(geom) FROM spatial_table; SELECT ST_Length(geom) FROM spatial_table; 以上示例展示了一些常见的查询语法,如选择所有的geometry数据、选择部分字段、使用条件过滤查询结果以及执行空间操作和分析。 此外,还可以通过结合其他PostgreSQL的查询功能来进一步优...
selectST_AsText(geometry)fromnodes;selectST_AsText(geometry)fromedges; 有关pgrouting: 1.Windows下的安装: 在官网下载和本机PostgreSQL对应版本的PGRouting,我这里的版本的PostgreSQL 9.2,这个版本可以使用的PGRouting对应版本是2.0。 下载PGRouing之后,可以看到里面有3个文件夹(bin、lib、share)和5个文件,以后可...
在新创建的LocationRepository类中,定义地理空间查询方法。例如,你可以使用selectRaw()和st_astext()函数来执行地理空间查询: <?phpnamespaceApp\Repositories;useApp\Models\Location;useIlluminate\Database\Eloquent\Repository;useDoctrine\ORM\Query\ResultSetMapping;classLocationRepositoryextendsRepository{publicfunctionfin...