This topic describes the ST_Within function, which queries whether a grid is contained in a geometry.
boolean ST_Within(geomgrid grid, geometry geom); boolean ST_Within(geometry geom, geomgrid grid); boolean ST_Within(geomgrid grid1, geomgrid grid2);
|grid||The grid whose spatial relationship you want to query.|
|geom||The geometry whose spatial relationship you want to query.|
This function returns the spatial relationship between a grid and a geometry. The geometry must use the CGC2000 spatial reference system. In addition, the spatial reference system identifier (SRID) of the geometry must be 4490.
select st_within(ST_geomfromtext('POINT(116.31522216796875 39.910277777777778)',4490), ST_gridfromtext('G001331032213300013')); st_within --------------- f select st_within(ST_gridfromtext('G001331032213300013'), ST_gridfromtext('G001331032213300')) st_within ------------- t