mysql - How to create a new table that takes the average of columns in other tables based on name -



mysql - How to create a new table that takes the average of columns in other tables based on name -

create table average_professor select ie.instructor ,sum(ie.instreffective_avg + h.howmuchlearned_avg + ir.instrrespect_avg + iv.instroverall_avg + av.availability_avg)/5 instreffective_average ie bring together howmuchlearned_average h using (instructor) bring together instrrespect_average ir using (instructor) bring together instructoroverall_average iv using (instructor) bring together availability_average av using (instructor) grouping instructor

it's giving me error code 1166. if omit "create table professor_average" script runs, yet don't have table created.

try naming calculation column:

create table average_professor select ie.instructor ,sum(ie.instreffective_avg + h.howmuchlearned_avg + ir.instrrespect_avg + iv.instroverall_avg + av.availability_avg)/5 calculation_value instreffective_average ie bring together howmuchlearned_average h using (instructor) bring together instrrespect_average ir using (instructor) bring together instructoroverall_average iv using (instructor) bring together availability_average av using (instructor) grouping instructor

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