Extensions
Scalar Functions
```sql
SELECT ST_AsHexWKB('POLYGON((0 0, 0 1, 1 1, 1 0, 0 0))'::GEOMETRY);
----
01030000000100000005000000000000000000000000000...
```  
----  
#### ST_AsSVG {#docs:extensions:spatial:functions::st_assvg}