Also see common JDBC Translators information.

The Exasol translator, known by the type name exasol, is for use with Exasol version 6 or later.

The Exasol database has the NULL HIGH default ordering, whereas the Teiid engine works in the NULL LOW mode. As a result, depending on whether the ordering is pushed down to Exasol or done by the engine, you might observe NULLs at either the beginning or end of returned results. To enforce consistency, you can run Teiid with org.teiid.pushdownDefaultNullOrder=true to specify NULL LOW ordering. Enforcing NULL LOW ordering can result in decreased performance.