荒谬，但我找不到此请求中的错误
SELECT * FROM diploms
LEFT JOIN student ON diploms.student_id = student.student_id
LEFT JOIN group ON student.group_id = group.group_id
LEFT JOIN speciality ON group.speciality_id = speciality.speciality_id
ORDER BY (CASE WHEN speciality.name IS NULL THEN 1 ELSE 0 END), speciality.name ASC
但是 SQL 说
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'group ON student.group_id = group.group_id LIMIT 0, 30' at line 3
什么？
最佳答案
group 是 reserved keyword in MySQL并且需要用反引号转义。
SELECT *
FROM diploms
LEFT JOIN student ON diploms.student_id = student.student_id
LEFT JOIN `group` ON student.group_id = `group`.group_id
LEFT JOIN speciality ON `group`.speciality_id = speciality.speciality_id
ORDER BY CASE WHEN speciality.name IS NULL THEN 1 ELSE 0 END,
speciality.name ASC
关于mysql - 找不到mySQL请求错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30856372/