ST_ASWKT

Introduced or updated: v1.2.436

Converts a GEOMETRY or GEOGRAPHY object into a WKT(well-known-text) format representation.

Syntax

ST_ASWKT(<geometry_or_geography>)

Aliases

• ST_ASTEXT

Arguments

Arguments	Description
<geometry_or_geography>	The argument must be an expression of type GEOMETRY or GEOGRAPHY.

Return Type

String.

Examples

GEOMETRY examples

SELECT
  ST_ASWKT(
    ST_GEOMETRYFROMWKT(
      'SRID=4326;LINESTRING(400000 6000000, 401000 6010000)'
    )
  ) AS pipeline_wkt;

┌───────────────────────────────────────────┐
│                pipeline_wkt               │
├───────────────────────────────────────────┤
│ LINESTRING(400000 6000000,401000 6010000) │
└───────────────────────────────────────────┘

SELECT
  ST_ASTEXT(
    ST_GEOMETRYFROMWKT(
      'SRID=4326;POINT(-122.35 37.55)'
    )
  ) AS pipeline_wkt;

┌──────────────────────┐
│     pipeline_wkt     │
├──────────────────────┤
│ POINT(-122.35 37.55) │
└──────────────────────┘

GEOGRAPHY examples

SELECT
  ST_ASWKT(
    ST_GEOGFROMWKT(
      'SRID=4326;POINT(-122.35 37.55)'
    )
  ) AS pipeline_wkt;

╭──────────────────────╮
│     pipeline_wkt     │
├──────────────────────┤
│ POINT(-122.35 37.55) │
╰──────────────────────╯