Aam-624390 (3/3/2010)
Seems to be a lot missing assumptions.
Well it seems a reasonable assumption that tblUsers exists, and is a table.
You then have to guess about data volumes - I thought that since a system generally has more than one user it was reasonable to assume that there were at least 2 rows.
Having made those assumptions then there could only be one answer - but I'm not sure what the question was meant to demonstrate? Did those who got it wrong just make different assumptions?