15.10 - ST_WKBToSQL - Teradata Database

Teradata Database SQL Geospatial Types

prodname
Teradata Database
vrm_release
15.10
category
Programming Reference
featnum
B035-1181-151K

Returns a specified ST_Geometry value.

 

Argument …

Specifies …

awkb

the geometry value specified in the well-known binary (WKB) format.

The data type of awkb is BLOB.

The maximum size of awkb is approximately 16 MB (the exact maximum is 16 MB ‑ 1 KB), allowing for a representation of approximately one million points.

For details on WKB formats, see “Well-Known Binary Representation” on page 198.

Returns an ST_Geometry value.

All ST_Geometry types.

Teradata Database provides this method because it is in the SQL/MM Spatial standard, where it is defined to implement transform functionality that allows importing the ST_Geometry type to the server.

For best performance, use a constructor method instead of ST_WKBToSQL to construct an instance of ST_Geometry.

   USING (a INTEGER,
          b BLOB(60000))
   INSERT INTO sample_shapes VALUES (:a, 
      new ST_Geometry('POINT(1 2)').ST_WKBToSQL(:b));