Apparently, teacher does not have the value in the DB yet

Implementation of multiple where, that has tableField and fild as a array, 'where' contain the fild 'condition' as a condition (ex.: AND, OR)  of where

Middlerawre that "translates" ids in results to strings

Now you can join tables with composite foreign/primary keys using RQF. In the
join attribute just use an array of columns that need to be used in the join

reqQueryFields would duplicate inner joins if the same property appeared in
dims and filter.