Could it be treating the comma as a decimal separator, so that it
searches for rows containing the value 1.5 rather than the two values
1 or 5?

Set

--- In IBObjects@yahoogroups.com, "Salvatore Besso" wrote:
> IN predicate:
>
> in(1, 5) works fine and returns rows
>
> in(1,5) works but doesn't return any row (notice the missing space
> after comma)