Wrong error message for IMPORT/EXPORT with script instead UDF

Detail name	Value
Changelog Number	9408
Type	Bug
Status	Resolved
Affected Versions	Exasol 6.1.0, Exasol 6.2.0
Fix Versions	Exasol 7.0.0
Resolution Date	2020-09-11

Background

Exasol only supports 'IMPORT/EXPORT FROM SCRIPT' in combination with UDF scriprts.

Problem

If an IMPORT/EXPORT uses a (LUA) procedure script instead of a UDF, Exasol throws an internal server error.
Example:

CREATE SCHEMA test;

--/
CREATE OR REPLACE SCRIPT TEST_SCRIPT RETURNS TABLE AS
return ""
/
IMPORT INTO (c1 VARCHAR(2000)) FROM SCRIPT TEST_SCRIPT;

Starting with version 7.0.0, Exasol properly throws a 'Feature not supported' error.