Single row SELECT

Informix®

With Informix, you must use the system table with a condition on the table id:

SELECT USER FROM systables WHERE tabid=1

Dameng®

To retrieve a single row with Dameng use the following syntax:
SELECT USER FROM dual

Solution

Check the BDL sources for "FROM systables WHERE tabid=1" and use dynamic SQL to resolve this problem.

Consider writing a FUNCTION which produces the FROM and WHERE part, depending on the target database type.