ST_Geometry ( wkt [, asrid ] )
- A CLOB for the well-known text representation of the spatial type.
- The maximum size of wkt is approximately 16 MB (the exact maximum is 16 MB - 1 KB), allowing for a representation of approximately one million points.
- For details on well-known text formats, see Well-Known Text Format.
- An optional INTEGER for a spatial reference system identifier.
- If this argument is omitted, the spatial reference system identifier is set to 0.