两张表关联更新
用一张表数据去update另一张表数据
### !!! 注意此操作比较危险,没有where条件,谨慎操作 !!! #用表fei_002中course_01取更新表fei_001中course_01 UPDATE `fei_001` AS a INNER JOIN `fei_002` AS b ON a.num = b.num SET a.`course_01` = b.course_01
标签：01,更新,fei,course,num,两张,关联 From： https://www.cnblogs.com/dafei4/p/17070061.html