I have created a stored procedure that contain this field (below) in
order to meet certain criteria. But my problem is when I try to run
the stored procedure I encounter an error "Error converting data type
varchar to float".

CASE Final WHEN 0 THEN '--' ELSE Final END AS FinalGrade

The Final field is a float data type.

Could anyone teach me how to fix this problem?

Hi JayPee

You case statement is illegal because '--' is actually a varchar.
what do you want the return to be ? what is the function.

you could cast final as varchar and then return something like

when '0' then '--' else cast(final as varchar)

or if you need to keep it as float, i suggest putting null instead of
'--' and then running is_null on that.

hope this helps
Tzvika