PostGIS 1.5.8 Manual - Fedora Project Packages GIT repositories

PostGIS 1.5.8 Manual249 / 310See AlsoLockRow7.12 Miscellaneous Functions7.12.1 ST_AccumST_Accum — Aggregate. Constructs an array of geometries.Synopsisgeometry[] ST_Accum(geometry set geomfield);DescriptionAggregate. Constructs an array of geometries.This function supports 3d and will not drop the z-index.This method supports Circular Strings and CurvesExamplesSELECT (ST_Accum(the_geom)) As all_em, ST_AsText((ST_Accum(the_geom))[1]) As grabone,(ST_Accum(the_geom))[2:4] as grab_restFROM (SELECT ST_MakePoint(a*CAST(random()*10 As integer), a*CAST(random()*10 Asinteger), a*CAST(random()*10 As integer)) As the_geomFROM generate_series(1,4) a) As foo;←↪all_em|grabone| grab_rest-------------------------------------------------------------------------------+{0101000080000000000000144000000000000024400000000000001040:010100008000000000000018400000000000002C400000000000003040:0101000080000000000000354000000000000038400000000000001840:010100008000000000000040400000000000003C400000000000003040} |POINT(5 10) | {010100008000000000000018400000000000002C400000000000003040:0101000080000000000000354000000000000038400000000000001840:010100008000000000000040400000000000003C400000000000003040}(1 row)See AlsoST_Collect7.12.2 Box2DBox2D — Returns a BOX2D representing the maximum extents of the geometry.