Gauss 100 关联删除
DELETE training FROM education JOIN training ON education.staff_id = training.staff_id; 或者 DELETE FROM training USING education JOIN training ON training.staff_id = education.staff_id; 主：join 关联表，数据表不能为临时表。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/69959250/viewspace-3122924/ ，如需转载，请注明出处，否则将追究法律责任。
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