Well, it returns a List of [i]something[/i], and that something is either an array of columns (if you did, e.g., SELECT x.id, x.name from X x) or an entity class (if you did, e.g., SELECT x FROM X x). (Sitting here, I can't remember what the elements of the list are when you select just one column--is it an array with size one, or is it just the scalar value? Don't remember.)
Hope that helps.
Laird
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