ST_3DUnion
Prev  8.3. SFCGAL Processing and Relationship Functions  Next

Name

ST_3DUnion — Perform 3D union.

Synopsis

geometry ST_3DUnion(geometry geom1, geometry geom2);

geometry ST_3DUnion(geometry set g1field);

설명

[Warning]

ST_3DUnion is deprecated as of 3.5.0. Use CG_3DUnion instead.

2.2.0 버전부터 사용할 수 있습니다.

Availability: 3.3.0 aggregate variant was added

This method needs SFCGAL backend.

This method implements the SQL/MM specification. SQL-MM IEC 13249-3: 5.1

This function supports 3d and will not drop the z-index.

This function supports Polyhedral surfaces.

This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).

Aggregate variant: returns a geometry that is the 3D union of a rowset of geometries. The ST_3DUnion() function is an "aggregate" function in the terminology of PostgreSQL. That means that it operates on rows of data, in the same way the SUM() and AVG() functions do and like most aggregates, it also ignores NULL geometries.