public function joinOn($foreignKeyColumn)
    {
        return 'join ' . $this->getTable() . ' on ' . $this->loader->getPrimaryKey($this->alias) . ' = ' . $foreignKeyColumn . ' ';
    }
public function joinOn($foreignKeyColumn)
    {
        return 'join ' . $this->getTable() . ' on ' . $this->loader->getPrimaryKey($this->alias) . ' = ' . $foreignKeyColumn . ' ';
    }
public function joinOn ( $ foreignKeyColumn ) { return 'join ' . $ this -> getTable ( ) . ' on ' . $ this -> loader -> getPrimaryKey ( $ this -> alias ) . ' = ' . $ foreignKeyColumn . ' ' ; }
Print out Join SQL

@param $foreignKeyColumn
@return string
Print out Join SQL