st_asgeojson function

Applies to: Databricks SQL Databricks Runtime 17.1 and above

Preview

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注記

This feature is not available on Databricks SQL Classic warehouses. To learn more about Databricks SQL warehouses, see SQL warehouse types.

Returns the input GEOGRAPHY or GEOMETRY value in GeoJSON format.

Syntax

st_asgeojson ( geoExpr )

Arguments

• geoExpr: A GEOGRAPHY or GEOMETRY value.

Returns

A value of type STRING. The returned value is the GeoJSON 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 WKT format, in GeoJSON format.
> SELECT st_asgeojson(to_geometry('POINT Z (2.718281828 3.141592653 100)'));
  {"type":"Point","coordinates":[2.718281828,3.141592653,100]}

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

Related functions

• st_asbinary function
• st_asewkb function
• st_asewkt function
• st_astext function
• st_aswkb function
• st_aswkt function
• st_geogfromgeojson function
• st_geogfromtext function
• st_geogfromwkb function
• st_geogfromwkt function
• st_geomfromewkb function
• st_geomfromgeojson function
• st_geomfromtext function
• st_geomfromwkb function
• st_geomfromwkt function
• to_geography function
• to_geometry function
• try_to_geography function
• try_to_geometry function