Name

ST_MemUnion — Same as ST_Union, only memory-friendly (uses less memory and more processor time).

Synopsis

geometry ST_MemUnion(geometry set geomfield);

Description

Some useful description here.

[Note]

Same as ST_Union, only memory-friendly (uses less memory and more processor time). This aggregate function works by unioning the geometries one at a time to previous result as opposed to ST_Union aggregate which first creates an array and then unions

This function supports 3d and will not drop the z-index, but sometimes does strange things with 3d.

Examples

See ST_Union

See Also

ST_Union