I’m not sure if I’m confused or if this is a bug, but I’m trying to set the default value for some report parameters to ‘’, eg, the empty string. That way I can compare it like (Column = :Param or :Param = ‘’) in the SQL, which works perfectly every time. So I’m not clear why I get several of
WARN: Error executing query parameter expression ''''
at the bottom of the report every time I execute, even in the published production version, where I’d expect mere warnings to not be shown at all. Is there another way I should be making empty strings? Or do I have to make a sentinel value of some sort?