你好。我是 SQL 的菜鸟，所以如果你帮我写一个 SQL 请求来从 tennisset 表中获取 FINALSCORE 字段，与 tennismatch WHERE id = 1 相关，我会很感激
谢谢。
最佳答案
试试这个查询:
select FINALSCORE from
tennismatch join
tennismatch_tennisset on tennismatch.ID = tennismatch_tennisset.TennisMatch_ID and tennismatch.ID = 1 join
tennisset on tennismatch_tennisset.mapOfSets_ID = tennisset.ID
要从表“tennismatch”中删除记录，首先从子表“tennismatch_tennisset”中删除记录。
尝试这样的事情:
delete from tennismatch_tennisset where TennisMatch_ID =1
delete from tennismatch where id=1
关于mysql - 一对多关系。如何提出要求？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44740564/