{"categories":["mysql","gis","spatial","newfunc"],"blog_title":"sakaik\u306e\u65e5\u3005\u96d1\u611f\uff5e(T)\u7de8","url":"https://sakaik.hateblo.jp/entry/20260308/STX_LineSubstring_func","height":"190","provider_url":"https://hatena.blog","width":"100%","author_name":"sakaik","author_url":"https://blog.hatena.ne.jp/sakaik/","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsakaik.hateblo.jp%2Fentry%2F20260308%2FSTX_LineSubstring_func\" title=\" MySQL GIS\u62e1\u5f35\u95a2\u6570\uff1a STX_LineSubstring() - 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>","title":" MySQL GIS\u62e1\u5f35\u95a2\u6570\uff1a STX_LineSubstring()","description":"\u81ea\u4f5c\u306e\u3001Spatial(GIS)\u95a2\u9023\u306e\u95a2\u6570\u3092MySQL\u306b\u8ffd\u52a0\u3059\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u95a2\u6570\u3092\u3072\u3068\u3064\u3072\u3068\u3064\u52d5\u4f5c\u78ba\u8a8d\u3057\u306a\u304c\u3089\u7d39\u4ecb\u3059\u308b\u30b7\u30ea\u30fc\u30ba\u3002 STX_LineSubstring(line, start, end) LINESTRING\u3092\u6307\u5b9a\u3057\u305f\u5272\u5408\u306e\u5834\u6240\u3067\u3061\u3087\u3093\u5207\u3063\u3066\u8fd4\u3059\u95a2\u6570\u3067\u3059\u3002 (0,0)-(0,100) \u306eLINESTRING\u3092\u30010.3\uff5e0.75 \u306e\u7bc4\u56f2\u3067\u5207\u308a\u51fa\u3059\u3068 (0,30)-(0,75) \u306eLINESTRING\u304c\u8fd4\u3063\u3066\u304f\u308b\u3001\u3068\u3044\u3063\u305f\u52d5\u4f5c\u3092\u3057\u307e\u3059\u30022\u70b9\u306b\u3088\u308bLINESTRING\u306e\u307f\u3067\u306a\u304f3\u70b9\u4ee5\u4e0a\u306eLINESTRING\u3067\u3082\u52d5\u4f5c\u3057\u307e\u3059\u3002 \u7b2c2\u3001\u7b2c3\u5f15\u6570\u306b\u4e0e\u3048\u308b\u306e\u306f 0.0-1.0\u306e\u7bc4\u56f2\u306e\u5272\u5408\u3067\u3001\u7b2c2\u2026","type":"rich","version":"1.0","published":"2026-03-08 18:10:45","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/s/sakaik/20260308/20260308180509.png","blog_url":"https://sakaik.hateblo.jp/"}