Environment

Knex version: 0.20.10
Database + version: MySQL 8.0
OS: Windows OS: Windows / linux docker dbs

Feature discussion / request

I would like to update tree nodes recursively in mysql with CTE in whereExists( select ...). Although I could put with into the whereExists's select in mysql and sqlite, that breaks mssql where with has to be at root level.
In mysql's compiler, some methods don't seem to include with(). Is there a reason for that or can with() be included?
Currently, I would overwrite it with

const mySqlUpdate = MySqlQueryCompiler.prototype.update;
MySqlQueryCompiler.prototype.update = function() {
  return this.with() + mySqlUpdate.apply(this, arguments);
};```