result returns #N/B

[Léon]

When i use a formula like " VLOOKUP ", sometimes the result is #N/B. Is it
possible to change the result in 0 (zero)? It would help me to use it in
calculations. E.g. when i use SUM and one of the results is #N/B, the result
of the SUM is #N/B.

 

[Dave Peterson]

in English, I'd use:

=if(iserror(vlookup(...)),0,vlookup(...))

 

[Ron de Bruin]

Hi Léon

See
http://www.contextures.com/xlFunctions02.html

 

[Danny@Kendal]

Does Excel calculate VLOOKUP twice in that example?

 

[Dave Peterson]

Only if it's not an error. I don't think excel worries about that last portion
if it finds the error (it stops after returning 0.)