{"url":"https://www.m3tech.blog/entry/2026/03/13/110000","blog_title":"\u30a8\u30e0\u30b9\u30ea\u30fc\u30c6\u30c3\u30af\u30d6\u30ed\u30b0","published":"2026-03-13 11:00:00","title":"PostgreSQL 18\u304b\u3089NOT NULL\u5236\u7d04\u3092NOT VALID\u3067\u8ffd\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f","blog_url":"https://www.m3tech.blog/","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/m3tech/20260313/20260313110002.png","height":"190","categories":["PostgreSQL"],"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.m3tech.blog%2Fentry%2F2026%2F03%2F13%2F110000\" title=\"PostgreSQL 18\u304b\u3089NOT NULL\u5236\u7d04\u3092NOT VALID\u3067\u8ffd\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f - \u30a8\u30e0\u30b9\u30ea\u30fc\u30c6\u30c3\u30af\u30d6\u30ed\u30b0\" 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","version":"1.0","author_url":"https://blog.hatena.ne.jp/ponk26/","width":"100%","author_name":"ponk26","description":"\u3053\u3093\u306b\u3061\u306f\uff01 \u30c7\u30b8\u30b9\u30de\u30c1\u30fc\u30e0\u306e\u5c71\u7530\u3067\u3059\u3002\u3053\u308c\u306f\u30c7\u30b8\u30b9\u30de\u30c1\u30fc\u30e0\u306e\u30d6\u30ed\u30b0\u30ea\u30ec\u30fc3\u65e5\u76ee\u306e\u6295\u7a3f\u3067\u3059\u3002 \u672c\u756a\u7a3c\u52d5\u4e2d\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u904b\u7528\u306b\u304a\u3044\u3066\u3001NOT NULL\u5236\u7d04\u3092\u6301\u305f\u305b\u305f\u3044\u30ab\u30e9\u30e0\u3092\u65e2\u5b58\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u8ffd\u52a0\u3059\u308b\u4f5c\u696d\u306f\u982d\u3092\u60a9\u307e\u305b\u308b\u3082\u306e\u3067\u3059\u3002PostgreSQL 11\uff08\u4ee5\u4e0b\u3001PG11\uff09\u4ee5\u964d\u3001DEFAULT\u3092\u56fa\u5b9a\u306e\u5024\u3067\u6307\u5b9a\u3057\u305f\u5834\u5408\u306e\u30ab\u30e9\u30e0\u8ffd\u52a0\u306f\u9ad8\u901f\u5316\u3055\u308c\u307e\u3057\u305f\u3002\u3057\u304b\u3057DEFAULT\u3068\u3057\u3066\u56fa\u5b9a\u5024\u3092\u7528\u610f\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5404\u884c\u3054\u3068\u306b\u7570\u306a\u308b\u5024\u306e\u975eNULL\u306a\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3057\u305f\u3044\u3068\u3044\u3046\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u300c\u4e00\u5ea6NULL\u3092\u8a31\u53ef\u3057\u3066\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6539\u4fee\u3084UPDATE\u306b\u3088\u308b\u30d0\u30c3\u30af\u30d5\u30a3\u30eb\u3092\u5b8c\u4e86\u3055\u305b\u305f\u5f8c\u306bN\u2026","type":"rich"}