Magento Join Alias

magento_join_alias.php

// NO Alias
$collection
    ->join('color', 'color.color_id = main_table.rug_color_id', 'color.name as rug_color_name')
    ->join('color', 'color.color_id = main_table.binding_color_id', 'color.name as binding_color_name')
    ->join('binding', 'binding.binding_id = main_table.binding_id', 'binding.name as binding_name');

//ALIAS
$collection->getSelect()->join(
    array('binding_color' => $collection->getTable('color')),
    'binding_color.color_id = main_table.binding_color_id',
    'binding_color.name as binding_color_name'
 );