ST_Collect

Introduction: Returns MultiGeometry object based on geometry column/s or array with geometries

Format:

ST_Collect(*geom: Geometry)

ST_Collect(geom: ARRAY[Geometry])

Since: v1.5.0

Example:

SELECT ST_Collect(
    ST_GeomFromText('POINT(21.427834 52.042576573)'),
    ST_GeomFromText('POINT(45.342524 56.342354355)')
) AS geom

Result:

+---------------------------------------------------------------+
|geom                                                           |
+---------------------------------------------------------------+
|MULTIPOINT ((21.427834 52.042576573), (45.342524 56.342354355))|
+---------------------------------------------------------------+

Example:

SELECT ST_Collect(
    Array(
        ST_GeomFromText('POINT(21.427834 52.042576573)'),
        ST_GeomFromText('POINT(45.342524 56.342354355)')
    )
) AS geom

Result:

+---------------------------------------------------------------+
|geom                                                           |
+---------------------------------------------------------------+
|MULTIPOINT ((21.427834 52.042576573), (45.342524 56.342354355))|
+---------------------------------------------------------------+