{"author_url":"https://blog.hatena.ne.jp/shigemk2/","categories":["MySQL"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2020%2F09%2F18%2F234400\" title=\"MySQL REFERENCES - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","width":"100%","type":"rich","blog_url":"https://www.shigemk2.com/","author_name":"shigemk2","blog_title":"by shigemk2","url":"https://www.shigemk2.com/entry/2020/09/18/234400","title":"MySQL REFERENCES","published":"2020-09-18 23:44:00","image_url":null,"version":"1.0","provider_url":"https://hatena.blog","height":"190","description":"\u3053\u3053\u304c\u91cd\u8981\u304b\u3082\u3057\u308c\u306a\u3044\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u306f\u6a5f\u80fd\u3057\u305f\u308a\u3057\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u3089\u3057\u3044\u3051\u30695.6\u3067\u3082\u30de\u30a4\u30ca\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u306f\u6a5f\u80fd\u3059\u308b\u3053\u3068\u3082\u3042\u308b\u3089\u3057\u3044\u304b\u3089\u3088\u304f\u308f\u304b\u3089\u306a\u3044 For storage engines other than InnoDB, it is possible when defining a column to use a REFERENCES tbl_name(col_name) clause, which has no actual effect, and serves only as a memo or comment to you that the column which y\u2026"}