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MySQL FULL OUTER JOIN (Workaround)

MySQL does not directly support FULL OUTER JOIN, but you can achieve the same result using a combination of LEFT JOIN and RIGHT JOIN with UNION.

Example: Using FULL OUTER JOIN Workaround

SELECT tamil_kings.king_name, kingdoms.kingdom_name
FROM tamil_kings
LEFT JOIN kingdoms ON tamil_kings.kingdom_id = kingdoms.kingdom_id
UNION
SELECT tamil_kings.king_name, kingdoms.kingdom_name
FROM tamil_kings
RIGHT JOIN kingdoms ON tamil_kings.kingdom_id = kingdoms.kingdom_id;

Code Explanation: This query uses a LEFT JOIN and a RIGHT JOIN combined with UNION to simulate a full outer join, including all records from both tables.

Key Takeaways

  • MySQL does not support FULL OUTER JOIN directly, so you need to use a workaround.
  • Combining LEFT JOIN and RIGHT JOIN with UNION achieves a similar result.
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