ST_LENGTH

Returns the Euclidean length of the LineString(s) in a GEOMETRY or GEOGRAPHY object.

Syntax

ST_LENGTH(<geometry_or_geography>)

Arguments

Return Type

Double.

Examples

GEOMETRY examples

SELECT
  ST_LENGTH(TO_GEOMETRY('POINT(1 1)')) AS length

┌─────────┐
│  length │
├─────────┤
│       0 │
└─────────┘

SELECT
  ST_LENGTH(TO_GEOMETRY('LINESTRING(0 0, 1 1)')) AS length

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

SELECT
  ST_LENGTH(
    TO_GEOMETRY('POLYGON((0 0, 0 1, 1 1, 1 0, 0 0))')
  ) AS length

┌─────────┐
│  length │
├─────────┤
│       0 │
└─────────┘

GEOGRAPHY examples

SELECT
  ST_LENGTH(
    ST_GEOGFROMWKT(
      'LINESTRING(0 0, 1 0)'
    )
  ) AS length

╭──────────────────╮
│      length      │
├──────────────────┤
│ 111319.490793274 │
╰──────────────────╯