ST_ZMin

Signature

DOUBLE ST_ZMin(GEOMETRY geom);

Description

Returns the minimum z-value of geom.

Example

SELECT ST_ZMin('LINESTRING(1 2 3, 4 5 6)');
-- Answer:    3.0

See also

• ST_XMin, ST_XMax, ST_YMax, ST_YMin, ST_ZMax
• Source code