Is there a setting to show <null> values in the result buffer?

Is it possible to show/fill the "nulls" of something like the following result? Does ejc-sql have an option for that?

orderid │ promotioncode
────────┼──────────────
1001    │              
1002    │              
1003    │              
1004    │              
1005    │              
1006    │ 2OFF2015     
1007    │ 2OFF2015     
1008    │ 2OFF2015