ST_Geometry Type Casts | Geospatial Data Types | Teradata Vantage - 17.05 - Casts - Teradata Database

Teradata Vantageā„¢ - Geospatial Data Types

prodname
Advanced SQL Engine
Teradata Database
vrm_release
17.00
17.05
created_date
June 2020
category
Programming Reference
featnum
B035-1181-170K
The database implements cast functionality that allows data type conversions between the following types:
  • ST_Geometry and VARCHAR(64000)
  • ST_Geometry and CLOB

To cast a VARCHAR or CLOB to an ST_Geometry type, the VARCHAR or CLOB data must use the WKT format of any of the ST_Geometry subtypes. For example:

INSERT INTO sample_shapes
   VALUES (1001, CAST('LINESTRING(1 1, 2 2, 3 3)' AS ST_Geometry));

For more information on the WKT format of the ST_Geometry type, see Well-Known Text Format.