{"type":"rich","categories":["PostgreSQL"],"image_url":null,"version":"1.0","width":"100%","blog_url":"https://bg1.hatenablog.com/","title":"char","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbg1.hatenablog.com%2Fentry%2F2025%2F04%2F29%2F210000\" title=\"char - \u8eca\u8f2a\u306ex\u767a\u660e ~B.G&#39;s Blog~\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2025-04-29 21:00:00","provider_name":"Hatena Blog","author_name":"BG1","author_url":"https://blog.hatena.ne.jp/BG1/","url":"https://bg1.hatenablog.com/entry/2025/04/29/210000","description":"char\u306f\u6587\u5b57\u5217\u3092\u683c\u7d0d\u3059\u308b\u6587\u5b57\u578b\u3002https://www.postgresql.jp/docs/9.4/datatype-character.html\u56fa\u5b9a\u9577\u3067\u3042\u308a\u3001\u5f8c\u308d\u306e\u4f59\u3063\u305f\u90e8\u5206\u306f\u7a7a\u767d\u3067\u57cb\u3081\u3089\u308c\u308b\u3002 \u305f\u3060\u3001LENGTH\u3067\u306f\u3001\u5f8c\u308d\u306e\u7a7a\u767d\u3092\u30ab\u30a6\u30f3\u30c8\u3057\u306a\u3044\u306e\u3067\u3001OCTET_LENGTH\u3067\u5b9f\u969b\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u6587\u5b57\u6570\u3092\u51fa\u3057\u3066\u307f\u308b\u3002 postgres@vbox:~$ psql -l \u30e6\u30fc\u30b6\u30fc postgres \u306e\u30d1\u30b9\u30ef\u30fc\u30c9: \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4e00\u89a7 \u540d\u524d | \u6240\u6709\u8005 | \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0 | \u30ed\u30b1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc | \u7167\u5408\u9806\u5e8f | Ctype(\u5909\u63db\u6f14\u7b97\u5b50) | ICU\u30ed\u30b1\u30fc\u30eb | ICU\u30eb\u30fc\u30eb: | \u30a2\u30af\u30bb\u30b9\u2026","blog_title":"\u8eca\u8f2a\u306ex\u767a\u660e ~B.G's Blog~","height":"190","provider_url":"https://hatena.blog"}