? NVL(oLeft.FieldWithNull,0) == NVL(oRight.FieldWithNull,0) && If FieldWithNull is some of the numeric fields ? NVL(oLeft.FieldWithNull,[]) == NVL(oRight.FieldWithNull,[]) && If FieldWithNull is char ? NVL(oLeft.FieldWithNull,{}) == NVL(oRight.FieldWithNull,{}) && If FieldWithNull is date