ST_AsGeobuf-ApsaraDB RDS(RDS)-阿里云帮助中心

Returns a Geobuf binary string (bytea) that represents a collection of rows.

Syntax

bytea  ST_AsGeobuf(anyelement set  row);
bytea  ST_AsGeobuf(anyelement  row , text  geomName);

Parameter	Description
`row`	The rows to encode as Geobuf. Each row must include at least one geometry column.
`geomName`	The name of the geometry column in the row data. When NULL, the function uses the first geometry column found.

Converts a POINT geometry at coordinates (116, 40) with SRID 4326 to a Geobuf binary string using the set-based overload.

SELECT ST_AsGeobuf(q)
FROM (SELECT ST_GeomFromText('POINT(116 40)', 4326)) AS q;

Output:

           st_asgeobuf
----------------------------------
 \x1800220b0a090a0708001a03e80150
(1 row)