quantity

query with custom unit

City	Area
Cherkasy	69 km²
Karlsruhe	173,46 km²

Correct:

{{#ask:
 [[Category:City]]
 [[Area::+]]
 |?Area
 |mainlabel=City
 |format=csv
}}

CSV

query omitting the custom unit

City	Area
Cherkasy	69
Karlsruhe	173,46

Wrong (includes custom unit though omitted):

{{#ask:
 [[Category:City]]
 [[Area::+]]
 |?Area#-n
 |mainlabel=City
 |format=csv
}}

CSV