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PolarDB:ganos.geometry.mbbox_split_length

Last Updated:Mar 28, 2026

ganos.geometry.mbbox_split_length (Double) — sets the minimum segment length used when splitting spatial objects to build a multi-bounding box (MBBox) spatial index. Default: 200.

Valid values

0.0001 to 10000000.00

Description

The unit of length depends on the object type:

  • geometry type: segment length is the sum of linear distances between consecutive points.

  • geography type: segment length is the sum of ellipsoid distances between consecutive points.

Use this parameter together with ganos.geometry.mbbox_split_max_segments. If the number of segments from splitting by the minimum length exceeds the maximum defined by ganos.geometry.mbbox_split_max_segments, the segment length is recalculated as:

Segment length = Total length / Maximum number of segments

Example

Set for the current session

SET ganos.geometry.mbbox_split_length = 300.00;

See also