Combine data from two different join tables
Part of my circuit is depicted as 
I have two jump tables, one that displays the items in a category and the other that displays which items are "featured" for a particular category.
Now I need to get all the items belonging to a specific category (not difficult), but I also need to have a "featured" column that will show up if an item is enabled for that category (NULL if not featured).
I have tried various combinations of LEFT JOIN like
SELECT i.*, category.name, category_feat_item.item_id AS featured
FROM item AS i
INNER JOIN item_category ON i.id = item_category.item_id
INNER JOIN category ON category.id = item_category.category_id AND category.id =1
LEFT OUTER JOIN category_feat_item ON i.id = category_feat_item.item_id
ORDER BY featured DESC
but I'm stumped.
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1 answer
Looks almost ok, but you also need to assign the category_id in the left outer join. Otherwise, you will receive all recognized items of the item:
SELECT i.*, category.name, category_feat_item.item_id AS featured
FROM item AS i
INNER JOIN item_category ON i.id = item_category.item_id
INNER JOIN category ON category.id = item_category.category_id AND category.id =1
LEFT OUTER JOIN category_feat_item ON i.id = category_feat_item.item_id AND category_feat_item.category_id = 1
ORDER BY featured DESC
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