Mengapa MySQL melaporkan kesalahan sintaks pada FULL OUTER JOIN?

Tidak ada FULL OUTER JOIN di MySQL. Lihat 7.2.12. Penyederhanaan Gabung Luar dan 12.2.8.1. GABUNG Sintaks :

Anda dapat meniru FULL OUTER JOIN usingUNION (dari MySQL 4.0.0 aktif):

dengan dua tabel t1, t2:

SELECT * FROM t1
LEFT JOIN t2 ON t1.id = t2.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id

dengan tiga tabel t1, t2, t3:

SELECT * FROM t1
LEFT JOIN t2 ON t1.id = t2.id
LEFT JOIN t3 ON t2.id = t3.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id
LEFT JOIN t3 ON t2.id = t3.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id
RIGHT JOIN t3 ON t2.id = t3.id