I have a VARBIT column containing images. In my form, I want to determine whether the column is NULL or contains an image and adjust my user interface accordingly. However, any attempt to learn whether the VARBIT column is NULL (for instance IFNULL(VarbitCol, 'Y', 'N')) meets with the error "An expression cannot contain a column of type VARBIT (2928)".
Does anyone know how I can figure out whether there's any data in that column? -- Larry
