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

Instruction

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Exercise

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

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Type:

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

Console

Code editor

Result

TableConsole