{"provider_name":"Hatena Blog","title":"CHAR(0)\u3063\u3066\u3069\u3046\u3084\u3063\u3066\u4f7f\u3046\u306e\u3060\uff1f","blog_title":"sakaik\u306e\u65e5\u3005\u96d1\u611f\uff5e(T)\u7de8","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsakaik.hateblo.jp%2Fentry%2F20090420%2Fp1\" title=\"CHAR(0)\u3063\u3066\u3069\u3046\u3084\u3063\u3066\u4f7f\u3046\u306e\u3060\uff1f - sakaik\u306e\u65e5\u3005\u96d1\u611f\uff5e(T)\u7de8\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","categories":["mysql"],"height":"190","description":"\u6700\u8fd1\u77e5\u4eba\u3068\u8a71\u3057\u3066\u3044\u3066\u3001CHAR\u578b\u3084VARCHAR\u578b\u306e\u30df\u30cb\u30de\u30e0\u5024\u304c\uff08\uff11\u3067\u306f\u306a\u304f\uff09\u30bc\u30ed\u3067\u3042\u308b\u3053\u3068\u3092\u8a8d\u8b58\u3057\u307e\u3057\u305f\u3002 mysql> CREATE TABLE t1 ( a CHAR(0), b VARCHAR(0)); Query OK, 0 rows affected (0.02 sec) mysql> INSERT INTO t1 VALUES (\"ABCDE\", \"FGHI\"); Query OK, 1 row affected, 2 warnings (0.00 sec) mysql> SELECT * FROM t1; +------+------+ | a | b | +------+--\u2026","published":"2009-04-20 00:00:00","width":"100%","url":"https://sakaik.hateblo.jp/entry/20090420/p1","author_name":"sakaik","image_url":null,"blog_url":"https://sakaik.hateblo.jp/","version":"1.0","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/sakaik/"}