15.10 - external_data_access - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

prodname
Teradata Database
vrm_release
15.10
created_date
December 2015
category
Programming Reference
featnum
B035-1144-151K

Optional clause that determines whether the function (or external stored procedure) can read or modify data that is external to Teradata Database.

MODIFIES EXTERNAL DATA
The function modifies data that is external to Teradata Database.
In the event of a database error, the system does not redrive requests involving a function or external stored procedure defined with this option. For details about Redrive functionality, see Database Administration, B035-1093.
NO EXTERNAL DATA
The function does not access data that is external to Teradata Database. This is the default.
READS EXTERNAL DATA
The function reads, but does not modify data that is external to Teradata Database.