Two joins using query builder

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1

Hi All!

I have three tables :

  • Categories[has its own id field]

  • Sub_categories[has its own id and main_category_id fields]

  • Items[has its own id and sub_category_id fields]

I need all items on main_category id =1…

My sql query looks like this :

SELECT * FROM items i INNER JOIN sub_categories sc ON sc.id = i.sub_category_id INNER JOIN categories c ON c.id = sc.main_category_id WHERE sc.main_category_id = 1…

now with query builder:

 $query= Yii::app()->db->createCommand()


->select()


->from('items i')

->join(‘sub_categories sc’, ‘sc.id = i.sub_category_id’)

How can I implement the 2nd join here?

I’d really appreciate any help!

2

Quite simple:


$query= Yii::app()->db->createCommand()

->select()

->from('items i')

->join('sub_categories sc', 'sc.id = i.sub_category_id')

->join('categories c','c.id = sc.main_category_id');

:)