Why does the query built in the query builder work in the console, but does not work when executed by the builder?

Question

MySQL

I have a request that looks like this:

DB::table('company_user as a')
            ->join('company_user as c', 'a.data', '=', 'c.data')
            ->where('a.company_id', '!=', 'c.company_id')
            ->where('a.field_name', '=', 'user_email')
            ->where('a.data', '!=', '')
            ->where('c.data', '!=', '')
            ->get();

If we use toSql() instead of ->get , we get the following code:

select * from `company_user` as `a` 
inner join `company_user` as `c` 
on `a`.`data` = `c`.`data` 
where `a`.`company_id` != `c`.`company_id` 
and `a`.`field_name` = 'user_email' 
and `a`.`data` != '' 
and `c`.`data` != '';

And now the most interesting thing, if you execute get (), then it stupidly displays the entire table, and if you execute sql code in the console, everything is ok. What could be the problem?