How to make particular rows/cells bold in the results table of custom SQL queries?

I have started writing SQL queries inside SAP B1 but I still cannot figure how to format some rows in the result set and make them bold. For example:

Customer1 <-- BOLD

10

10

10

30 <-- BOLD

Customer2 <-- BOLD 20

20

40 <-- BOLD

Any help would be highly appreciated, thanks.