Crystal Reports uses a parameter to limit a report by record. Follow the steps below to limit a report to one record or all records:
 
       
    • Click the Set Default Values button to define the allowed values. Include 'ALL' as an option.
     
    • Select Report, Select Expert
     
    • Select Show Formula, Formula Editor
     
    • Add:

      (if {?ParameterField} = "ALL" then {PARAMETERDEFAULTVALUEFIELD.EN_US}
      like "*" else {PARAMETERDEFAULTVALUEFIELD.EN_US} = {?ParameterField})
     
    • Save and Close the formula
     
    • Click OK to close the Select Expert