APEX 18.2
I have an editable IG with a Select List on one of the columns. Here is the Select List attributes

Help states

A mask DOES appear for a normal text item (as specified in the Attribute property of the IG)

but NOT for a Select List when I render the IG.

How do I display something other than a blank value for a null value in a column with a Select List in an IG... other than using an NVL() function in the SQL?
thanks in advance
PaulP