Recuperer ligne nulle

[eprehu]

Bonjour,

J'aimerais recuperer les valeurs nulles, j'ai utilisé le isnull mais ca ne fonctionne pas : 

Merci 

[maxgro]

maybe the value is a blank, not a null, try with (replace value)

if(len(trim(value))=0 OR isnull(value), 'T', 'F')

[eprehu]

Yes perfect thanks !!!!

[eprehu]

But now, i want to count the number of customer who have no information about their age :

But it doesn't work :