Question

i need to update the enrollment table with the appropriate fee which comes from the course table for all customer taking the course named ‘COURSE NAME’

update from enrollment as e
    join course as c on c.coursenumber = e.coursenumber
    join customer as cs on cs.customernumber = e.customernumber 
set e.amountpaid = course.fee
where e.coursenumber in (select coursenumber from course where course = 'COURSE   NAME');

Is that possible in mysql ? I’m new to this DBMS and sql in general.

Answer 1

just remove the FROM keyword.

update enrollment as e
    join course as c on c.coursenumber = e.coursenumber
    join customer as cs on cs.customernumber = e.customernumber 
set e.amountpaid = course.fee
where e.coursenumber in (select coursenumber from course where course = 'COURSE   NAME');

or just directly do without IN

update enrollment as e
    join course as c on c.coursenumber = e.coursenumber
    join customer as cs on cs.customernumber = e.customernumber 
set e.amountpaid = course.fee
where  c.course = 'COURSE   NAME';