Question

I got the following error : unable to format the string @"( StudiesPatient.PatientName LIKE %@ AND ModalityName LIKE %@ AND StudiesPatient.PatientID LIKE @% )"

I use the below code , any suggestion how to fix it

                          ]]; */
PatientName =    (PatientName != @"")? PatientName : @"*" ; 
Modality =       (Modality != @"" )? Modality : @"*"  ;
PataientID =     (PataientID != @"") ? PataientID : @"*"  ;

    NSLog(PatientName ) ;
    NSLog( Modality) ;
    NSLog( PataientID) ;


 [fetchRequest setPredicate:[NSPredicate predicateWithFormat:@"( StudiesPatient.PatientName LIKE %@ AND ModalityName LIKE %@ AND StudiesPatient.PatientID LIKE @% )",
                             PatientName,
                             Modality, 
                             PataientID              ]];

Answer 1

Your last placeholder is mixed up – @% instead of %@.