ST_Geometry

定义

ST_Geometry 通过熟知文本表示构造几何。

创建将用于 ArcGIS 的空间表时，最好将列创建为几何父类型（如 ST_Geometry），而不要指定一个 ST_Geometry 子类型，如 ST_LineString。

语法

Oracle

• 对于线串、面和点

  sde.st_geometry (wkt clob, srid integer)

• 对于优化的点（不启动 extproc 代理，因此查询的处理速度更快）

  sde.st_geometry (x, y, z, m, srid)

  在批量插入大量的点数据时，请使用优化的点构造。

• 对于参数圆

  sde.st_geometry (x, y, z, m, radius, number_of_points, srid)

• 对于参数椭圆

  sde.st_geometry (x, y, z, m, semi_major_axis, semi_minor_axis, angle, number_of_points, srid)

• 对于参数楔形

  sde.st_geometry (x, y, z, m, startangle, endangle, outerradius, innerradius, number_of_points, srid)

PostgreSQL

• 对于线串、面和点

  sde.st_geometry (wkt, srid integer)
  sde.st_geometry (esri_shape bytea, srid integer)

• 对于参数圆

  sde.st_geometry (x, y, z, m, radius, number_of_points, srid)

• 对于参数椭圆

  sde.st_geometry (x, y, z, m, semi_major_axis, semi_minor_axis, angle, number_of_points, srid)

• 对于参数楔形

  sde.st_geometry (x, y, z, m, startangle, endangle, outerradius, innerradius, number_of_points, srid)

SQLite

• 对于线串、面和点

  st_geometry (text  WKT_string,int32 srid)

• 对于参数圆

  st_geometry (x, y, z, m, radius, number_of_points, srid)

• 对于参数椭圆

  st_geometry (x, y, z, m, semi_major_axis, semi_minor_axis, angle_of_rotation, number_of_points, srid)

• 对于参数楔形

  st_geometry (x, y, z, m, start_angle, end_angle, outer_radius, inner_radius, number_of_points, srid)

返回类型

Oracle 和 PostgreSQL

ST_Geometry

SQLite

Geometryblob

示例

创建并查询点、线串和面要素

这些示例将创建表 (geoms)，并将点、线串以及面值插入其中。

Oracle

CREATE TABLE geoms (
 id integer,
 geometry sde.st_geometry
);

INSERT INTO GEOMS (id, geometry) VALUES (
 1901,
 sde.st_geometry ('point (1 2)', 4326)
);

--To insert the same point using optimized point construction:
INSERT INTO GEOMS (id, geometry) VALUES (
 1901,
 sde.st_geometry (1,2,null,null,4326)
);

INSERT INTO GEOMS (id, geometry) VALUES (
 1902,
 sde.st_geometry ('linestring (33 2, 34 3, 35 6)', 4326)
);

INSERT INTO GEOMS (id, geometry) VALUES (
 1903,
 sde.st_geometry ('polygon ((3 3, 4 6, 5 3, 3 3))', 4326)
);

PostgreSQL

CREATE TABLE geoms (
 id serial,
 geometry sde.st_geometry
);

INSERT INTO geoms (geometry) VALUES (
 sde.st_geometry ('point (1 2)', 4326)
);

INSERT INTO geoms (geometry) VALUES (
 sde.st_geometry ('linestring (33 2, 34 3, 35 6)', 4326)
);

INSERT INTO geoms (geometry) VALUES (
 sde.st_geometry ('polygon ((3 3, 4 6, 5 3, 3 3))', 4326)
);

SQLite

CREATE TABLE geoms (
 id integer primary key autoincrement not null
);

SELECT AddGeometryColumn (
 NULL,
 'geoms',
 'geometry',
 4326,
 'geometry',
 'xy',
 'null'
);

INSERT INTO geoms (geometry) VALUES (
 st_geometry ('point (1 2)', 4326)
);

INSERT INTO geoms (geometry) VALUES (
 st_geometry ('linestring (33 2, 34 3, 35 6)', 4326)
);

INSERT INTO geoms (geometry) VALUES (
 st_geometry ('polygon ((3 3, 4 6, 5 3, 3 3))', 4326)
);

创建并查询参数圆

创建表 radii，并将圆插入其中。

Oracle

CREATE TABLE radii (
 id integer,
 geometry sde.st_geometry
);

INSERT INTO RADII (id, geometry) VALUES (
 1904,
 sde.st_geometry (10,10,NULL,NULL,25,50,4326)
);

INSERT INTO RADII (id, geometry) VALUES (
 1905,
 sde.st_geometry (5,15,NULL,NULL,10,20,4326)
);

PostgreSQL

CREATE TABLE radii (
 id serial,
 geometry sde.st_geometry
);

INSERT INTO radii (geometry) VALUES (
 sde.st_geometry (10,10,NULL,NULL,25,50,4326)
);

INSERT INTO radii (geometry) VALUES (
 sde.st_geometry (5,15,NULL,20,10,30,4326)
);

SQLite

CREATE TABLE radii (
 id integer primary key autoincrement not null
);

SELECT AddGeometryColumn (
 NULL,
 'radii',
 'geometry',
 4326,
 'geometry',
 'xy',
 'null'
);

INSERT INTO radii (geometry) VALUES (
 st_geometry (10,10,NULL,NULL,25,50,4326)
);

INSERT INTO radii (geometry) VALUES (
 st_geometry (5,15,NULL,20,10,30,4326)
);

创建并查询参数椭圆

创建表 track，并将椭圆插入其中。

Oracle

CREATE TABLE track (
 id integer,
 geometry sde.st_geometry
);

INSERT INTO TRACK (id, geometry) VALUES (
 1907,
 sde.st_geometry (0,0,NULL,NULL,10,5,0,50,4326)
);

INSERT INTO TRACK (id, geometry) VALUES (
 1908,
 sde.st_geometry (4,19,10,20,10,5,0,40,4326)
);

PostgreSQL

CREATE TABLE track (
 id serial,
 geometry sde.st_geometry
);

INSERT INTO track (geometry) VALUES (
 sde.st_geometry (0,0,NULL,NULL,10,5,0,50,4326)
);

INSERT INTO track (geometry) VALUES (
 sde.st_geometry (4,19,10,20,10,5,0,40,4326)
);

SQLite

CREATE TABLE track (
 id integer primary key autoincrement not null
);

SELECT AddGeometryColumn (
 NULL,
 'track',
 'geometry',
 4326,
 'geometry',
 'xy',
 'null'
);

INSERT INTO track (geometry) VALUES (
 st_geometry (0,0,NULL,NULL,10,5,0,50,4326)
);

INSERT INTO track (geometry) VALUES (
 st_geometry (4,19,10,20,10,5,0,40,4326)
);

创建并查询参数楔形

创建表 pwedge，并将楔形插入其中。

Oracle

CREATE TABLE pwedge (
 id integer,
 label varchar2(8),
 shape sde.st_geometry
);

INSERT INTO PWEDGE (uid, label, shape) VALUES (
 1,
 'Wedge1',
 sde.st_geometry (10,30,NULL,NULL,45,145,5,2,60,4326)
);

PostgreSQL

CREATE TABLE pwedge (
 id serial,
 label varchar(8),
 shape sde.st_geometry
);

INSERT INTO pwedge (label, shape) VALUES (
 'Wedge',
 sde.st_geometry(10,30,NULL,NULL,45,145,5,2,60,4326)
);

SQLite

CREATE TABLE pwedge (
 id integer primary key autoincrement not null,
 label varchar(8)
);

SELECT AddGeometryColumn (
 NULL,
 'pwedge',
 'shape',
 4326,
 'geometry',
 'xy',
 'null'
);

INSERT INTO pwedge (label, shape) VALUES (
 'Wedge',
 st_geometry(10,30,NULL,NULL,45,145,5,2,60,4326)
);