Hi, I have a crosstab below capture from a datasource in SAP Design Studio 1.6, which display due entry for employees timesheet.

How can i use similar queries as below to display the string which are not null for the person. For example, EMP_1 textbox will displayed "charles.lee" and the EMP_TD_1 textbox should displayed the string value of either "More than 3 Days" which is 2018-06-13, or if the column for more than 3 days is an empty string, it would display the string value in the "Within 3 Days" column which is reference to the person I chosen.

Final results should be like this:
EMP_1.textbox : charles.lee
EMP_TD_1.textbox: 2018-06-13
EMP_2.textbox = yuenpeng.yap
EMP_TD_2.textbox = 2018-06-19