query: SELECT date_of_enrolment ,  date_of_completion FROM Student_Course_Enrolment
question: What are all the dates of enrollment and completion in record?
query_toks: SELECT date_of_enrolment , date_of_completion FROM Student_Course_Enrolment
query_toks_no_value: select date_of_enrolment , date_of_completion from student_course_enrolment
question_toks: What are all the dates of enrollment and completion in record?