从Point、MultiPoint或者Line等...st_astext-LINESTRING Z(1 2 3,4 5 6)(1 row)通过数组构建：SELECT ST_AsText(ST_MakeLine(ARRAY[ST_MakePoint(1,2),ST_MakePoint(3,4),ST_MakePoint(5,6)]));st_astext-LINESTRING(1 2,3 4,5 6)(1 row)
This topic describes the ST_Union function.This function constructs a geometry object that represents the union of multiple specified geometry objects.Syntax geometry ST_Union(geometry set g1Field);geometry ST_Union...
This topic describes the ST_Contains function,which queries whether a grid contains a geometry.Syntax boolean ST_Contains(geomgrid grid,geometry geom);boolean ST_Contains(geometry geom,geomgrid grid);boolean ST_Contains...
This topic describes the ST_Union function.This function constructs a geometry object that represents the union of multiple specified geometry objects.Syntax geometry ST_Union(geometry set g1Field);geometry ST_Union...
This topic describes the ST_MakeLine function.This function constructs a LineString object by using geometry objects,such as points,MultiPoints,or lines.Syntax geometry ST_MakeLine(geometry set geoms);geometry ST_MakeLine...
语法 geometry ST_MakePoint(double precision x,double precision y);geometry ST_MakePoint(double precision x,double precision y,double precision z);geometry ST_MakePoint(double precision x,double precision y,double precision...
b,ST_PGEpochToTS(0),ST_PGEpochToTS(49),19),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_3dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(70),21),ST...
st_isring|st_isclosed|st_issimple-+-+-t|t|t(1 row)返回false的情况：SELECT ST_IsRing(geom),ST_IsClosed(geom),ST_IsSimple(geom)FROM(SELECT 'LINESTRING(0 0,0 2,0 0)':geometry AS geom)AS test;st_isring|st_isclosed|st_issimple-...
This topic describes the ST_IsRing function.This function returns true if the results of both the ST_IsClosed function and the ST_IsSimple function for the input geometry object are true.Syntax boolean ST_IsRing(geometry g...
This topic describes the ST_MakeLine function.This function constructs a LineString object by using geometry objects,such as points,MultiPoints,or lines.Syntax geometry ST_MakeLine(geometry set geoms);geometry ST_MakeLine...
The following result is returned:st_astext-POINT(116 39)Statement in which the SRID is specified SELECT st_astext(geom)FROM holo_gis_2 WHERE ST_Covers(ST_SetSRID(ST_MakeBox2D(ST_Point(116,39),ST_Point(117,40)),4326),geom);...
语法 geometry ST_MakePoint(double precision x,double precision y);geometry ST_MakePoint(double precision x,double precision y,double precision z);geometry ST_MakePoint(double precision x,double precision y,double precision...
b,ST_PGEpochToTS(0),ST_PGEpochToTS(49),19),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_3dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(70),21),ST...
This topic describes the ST_MakePoint function.This function constructs a 2D,3DZ,or 4D point object.Syntax geometry ST_MakePoint(double precision x,double precision y);geometry ST_MakePoint(double precision x,double ...
This topic describes the ST_Union function.This function constructs a geometry object that represents the union of multiple specified geometry objects.Syntax geometry ST_Union(geometry set g1Field);geometry ST_Union...
b,ST_PGEpochToTS(0),ST_PGEpochToTS(49),19),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_3dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(70),21),ST...
This topic describes the ST_Within function,which queries whether a grid is contained in a geometry.Syntax boolean ST_Within(geomgrid grid,geometry geom);boolean ST_Within(geometry geom,geomgrid grid);boolean ST_Within...
This topic describes the ST_Within function,which queries whether a grid is contained in a geometry.Syntax boolean ST_Within(geomgrid grid,geometry geom);boolean ST_Within(geometry geom,geomgrid grid);boolean ST_Within...
b,ST_PGEpochToTS(0),ST_PGEpochToTS(49),19),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_3dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(50),20),ST_2dtDWithin(a,b,ST_PGEpochToTS(0),ST_PGEpochToTS(70),21),ST...
This topic describes the release notes for GanosBase.GanosBase is a spatio-temporal database engine for ApsaraDB RDS for PostgreSQL.7.x 7.0 Bug fixes:Trajectory SQL The following issue is fixed:The ST_2DIntersects function...
This topic describes the ST_Contains function,which queries whether a grid contains a geometry.Syntax boolean ST_Contains(geomgrid grid,geometry geom);boolean ST_Contains(geometry geom,geomgrid grid);boolean ST_Contains...
查询网格对象代表的空间范围和几何对象是否是包含关系。语法 boolean ST_Contains(geomgrid grid,geometry ...st_intersects-f select st_contains(ST_gridfromtext('G00133103221330'),ST_gridfromtext('G001331032213300013'))st_contains-t
This topic describes the release notes for the GanosBase spatio-temporal database for PolarDB for PostgreSQL.7.X 7.8 Category Description Performance optimization Geometry SQL The performance of the ST_As3DGrid function is...
This topic describes the ST_Within function,which queries whether a grid is contained in a geometry.Syntax boolean ST_Within(geomgrid grid,geometry geom);boolean ST_Within(geometry geom,geomgrid grid);boolean ST_Within...
示例 不同弧段分段数对比：select st_curvetoline(ST_OffsetCurve(g,1,'quad_segs=2')),st_curvetoline(ST_OffsetCurve(g,1.1,'quad_segs=3')),st_curvetoline(ST_OffsetCurve(g,1.2))g from(select 'LINESTRING(0 0,0 1,1 1)':geometry as...
查询网格对象代表的空间范围和几何对象是否是包含关系。语法 boolean ST_Contains(geomgrid grid,geometry ...st_intersects-f select st_contains(ST_gridfromtext('G00133103221330'),ST_gridfromtext('G001331032213300013'))st_contains-t
This topic describes the ST_AsMVTEx function.This function serves the same as the ST_AsMVT function.Compared with the ST_AsMVT function,the ST_AsMVTEx function filters out the vector elements that have little effect on the...
This topic describes the ST_AsMVTEx function.This function serves the same as the ST_AsMVT function.Compared with the ST_AsMVT function,the ST_AsMVTEx function filters out the vector elements that have little effect on the...
示例 不同弧段分段数对比：select st_curvetoline(ST_OffsetCurve(g,1,'quad_segs=2')),st_curvetoline(ST_OffsetCurve(g,1.1,'quad_segs=3')),st_curvetoline(ST_OffsetCurve(g,1.2))g from(select 'LINESTRING(0 0,0 1,1 1)':geometry as...
示例 不同弧段分段数对比：select st_curvetoline(ST_OffsetCurve(g,1,'quad_segs=2')),st_curvetoline(ST_OffsetCurve(g,1.1,'quad_segs=3')),st_curvetoline(ST_OffsetCurve(g,1.2))g from(select 'LINESTRING(0 0,0 1,1 1)':geometry as...
This topic describes the ST_AsMVTEx function.This function serves the same as the ST_AsMVT function.Compared with the ST_AsMVT function,the ST_AsMVTEx function filters out the vector elements that have little effect on the...