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st_aswkt function

Applies to: check marked yes Databricks SQL check marked yes Databricks Runtime 17.1 and above

Preview

This feature is in Public Preview.

Returns the input GEOGRAPHY or GEOMETRY value in WKT format.

Syntax

st_aswkt ( geoExpr )

Arguments

  • geoExpr: A GEOGRAPHY or GEOMETRY value.

Returns

A value of type STRING. The returned value is the WKT description of the input GEOGRAPHY or GEOMETRY value.

The function returns NULL if the input is NULL.

Examples

SQL
-- Export a 3DZ Cartesian point, given in GeoJSON format, in WKT format.
> SELECT st_aswkt(to_geometry('{"type":"Point","coordinates":[2.718281828,3.141592653,100]}'));
POINT Z (2.718281828 3.141592653 100)

-- Export a 3DZ geographic point, given in GeoJSON format, in WKT format.
> SELECT st_aswkt(to_geography('{"type":"Point","coordinates":[2.718281828,3.141592653,100]}'));
POINT Z (2.718281828 3.141592653 100)