ST_DISTANCE

Introduced or updated: v1.2.555

Returns the minimum Euclidean distance between two GEOMETRY objects.

Syntax

ST_DISTANCE(<geometry1>, <geometry2>)

Arguments

Arguments	Description
<geometry1>	The argument must be an expression of type GEOMETRY and must contain a Point.
<geometry2>	The argument must be an expression of type GEOMETRY and must contain a Point.

备注

• Returns NULL if one or more input points are NULL.
• The function reports an error if the two input GEOMETRY objects have different SRIDs.

Return Type

Double.

Examples

SELECT
  ST_DISTANCE(
    TO_GEOMETRY('POINT(0 0)'),
    TO_GEOMETRY('POINT(1 1)')
  ) AS distance

┌─────────────┐
│   distance  │
├─────────────┤
│ 1.414213562 │
└─────────────┘