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PostgreSQL JOINs

Simple JOINs recap
Various kinds of JOINs
Filtering with LEFT JOIN and RIGHT JOIN
Summary
20. Exercise 3

Instruction

Amazing! Only one more to go. Keep it up!

Exercise

Show all information only for those items that weren't auctioned off.

Stuck? Here's a hint!

Type: 

SELECT *
FROM auction_item
LEFT JOIN bidder
  ON auction_item.id = bidder.bought_item_id
WHERE bidder.bought_item_id IS NULL