Table Editor/Field calculator/Condition field ?

Calculate function allows to use "if" to add condition. But it doesn't seem to have a place to fill condition before field future content.

If ou insert "if(substr2( NOM ; 1 ; 6 )='CAMERA' ;'CAMERA' ;'' )" with quotes, if will obviously fill field with this value, but if you omit quotes, syntax will also be bad.

A "condition field" needs to be added to field calculator ?