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
SAP ASE
With SAP® ASE, you can omit the FROM clause to
generate one row only:
SELECT userSolution
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.