{"id":1313,"date":"2010-10-06T09:14:48","date_gmt":"2010-10-06T01:14:48","guid":{"rendered":"http:\/\/nan.im\/blog\/?p=1313"},"modified":"2010-10-06T09:14:48","modified_gmt":"2010-10-06T01:14:48","slug":"yql-yahoo-query-language-%e4%bb%a5%e4%b8%8d%e5%8f%98%e5%ba%94%e4%b8%87%e5%8f%98%e7%9a%84%e6%95%b0%e6%8d%ae%e4%b8%8e%e5%86%85%e5%ae%b9%e8%8e%b7%e5%8f%96%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"http:\/\/www.nan.im\/blog\/1313","title":{"rendered":"YQL &#8211; Yahoo! Query Language \u4ee5\u4e0d\u53d8\u5e94\u4e07\u53d8\u7684\u6570\u636e\u4e0e\u5185\u5bb9\u83b7\u53d6\u65b9\u5f0f"},"content":{"rendered":"<p><a href=\"http:\/\/yahoo.com\/\">Yahoo!<\/a> \u7684\u5f00\u53d1\u8005\u4eec\u603b\u80fd\u4e00\u6b21\u53c8\u4e00\u6b21\u7684\u5e26\u7ed9\u6211\u4eec\u60ca\u559c\uff0c\u8fd9\u6b21\u662f <a href=\"http:\/\/developer.yahoo.com\/yql\/\">Yahoo! Query Language<\/a> \u96c5\u864e\u67e5\u8be2\u8bed\u8a00\uff08YQL\uff09\u662f\u7531\u96c5\u864e\u63d0\u4f9b\u7684\u4e00\u79cd\u7c7b SQL \u8bed\u6cd5\uff0c\u501f\u52a9\u96c5\u864e\u5f3a\u5927\u7684\u4e91\u8ba1\u7b97\u80fd\u529b YQL \u4ec5\u4f7f\u7528\u4e00\u884c\u6216\u8005\u51e0\u884c\u4ee3\u7801\u5c31\u80fd\u591f\u8f7b\u677e\u7684\u8fdb\u884c\u8de8\u57df\u8de8\u670d\u52a1\u7684\u67e5\u8be2\u548c\u8fc7\u6ee4\u4ee5\u83b7\u53d6\u5185\u5bb9\u548c\u6570\u636e\uff0c\u800c\u4e14\u901f\u5ea6\u4e5f\u7edd\u5bf9\u8ba9\u5f00\u53d1\u8005\u6ee1\u610f\u3002<\/p>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\u662f\u6211\u53ef\u4ee5\u7528\u8bf8\u5982\uff08select * from flickr.photos.search where text=&#8221;apple&#8221; limit 9\uff09\u7684\u8bed\u53e5\u5f97\u5230 flickr \u4e0a\u5173\u4e8e apple \u7684 9 \u6761\u6570\u636e\uff0c\u8fd4\u56de\u7ed3\u679c\u4e3a XML \u6216 JSON \u800c\u5f15\u7528\u65b9\u6cd5\u53ea\u662f\u5c06\u4ee5\u4e0a\u8bed\u53e5\u505a\u4e3a\u53c2\u6570\u5373 URL \u7684\u4e00\u90e8\u5206\u76f4\u63a5\u5411 YQL \u8bf7\u6c42\u5373\u53ef\uff0c\u5f53\u7136\u770b\u4f3c\u4e0e xQuery GQL SimpleDB \u7b49\u67e5\u8be2\u7c7b\u4f3c\u5374\u6f5c\u529b\u65e0\u9650\uff0c\u8bd5\u60f3\u65e2\u7136\u53ef\u4ee5\u62d3\u5c55\u5230\u8de8\u57df\u53ca\u8de8\u670d\u52a1\uff0c\u90a3\u4e48\u65e0\u8bba\u4f60\u9700\u8981\u5730\u56fe\u652f\u6301\u3001\u641c\u7d22\u652f\u6301\u3001\u56fe\u7247\u652f\u6301\u3001\u5929\u6c14\u751a\u81f3\u80a1\u7968\u7b49\u7b49\u5c06\u5747\u53ef\u4ee5\u4ece YQL \u83b7\u53d6\u800c\u4e0d\u9700\u8981\u81ea\u5df1\u53bb\u5b66\u4e60\u4e00\u5957\u53c8\u4e00\u5957\u7684\u79c1\u6709\u63a5\u53e3\uff0c\u96c5\u864e YQL \u4e3a\u6211\u4eec\u83b7\u53d6\u6570\u636e\u548c\u5185\u5bb9\u63d0\u4f9b\u4e86\u4e00\u4e2a\u201c\u4ee5\u4e0d\u53d8\u5e94\u4e07\u53d8\u201d\u7684\u4e2d\u95f4\u5c42\u2026\u2026<!--more--><\/p>\n<p><center><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/nan.im\/blog\/wp-content\/uploads\/YQL-Model.jpg\" alt=\"\" title=\"YQL-Model\" width=\"577\" height=\"217\" class=\"aligncenter size-full wp-image-1317\" \/><br \/>\u96c5\u864e YQL \u6a21\u578b<\/center><\/p>\n<blockquote><p>YQL\uff1a<a href=\"http:\/\/developer.yahoo.com\/yql\/\">http:\/\/developer.yahoo.com\/yql\/<\/a><\/p>\n<p>YQL Guide\uff1a<a href=\"http:\/\/developer.yahoo.com\/yql\/guide\/\">http:\/\/developer.yahoo.com\/yql\/guide\/<\/a><\/p>\n<p>YQL Console\uff1a<a href=\"http:\/\/developer.yahoo.com\/yql\/console\/\">http:\/\/developer.yahoo.com\/yql\/console\/<\/a><\/p><\/blockquote>\n<p>\u4ee5\u4e0a\u662f\u96c5\u864e YQL \u7684\u6a21\u578b\u53ca\u9879\u76ee\u7f51\u7ad9\u53ca\u624b\u518c\u548c\u8c03\u8bd5\u5730\u5740\uff0c\u968f\u7740 Web 2.0 \u670d\u52a1\u7684\u8d8a\u6765\u8d8a\u591a\uff0c\u5404\u4e2a\u7f51\u7ad9\u6240\u63d0\u4f9b\u7684\u5f00\u653e API \u4e5f\u8d8a\u6765\u8d8a\u591a\uff0c\u5f00\u53d1\u8005\u5982\u679c\u9700\u8981\u501f\u52a9\u8fd9\u4e9b API \u8fdb\u884c\u5f00\u53d1\u5c31\u5fc5\u987b\u91cd\u65b0\u5b66\u4e60\u53ca\u638c\u63e1\u8fd9\u4e9b API \u9700\u8981\u5730\u56fe\u670d\u52a1\u5c31\u5f97\u770b\u770b\u5730\u56fe\u7684 API \u6587\u6863\u9700\u8981\u641c\u7d22\u652f\u6301\u5c31\u53c8\u5f97\u53bb\u5b66\u4e60\u641c\u7d22\u7684 API \u7b49\u5b66\u4f1a\u4e86 Google \u7684\u53c8\u53d1\u73b0\u9700\u8981 Twitter \u7684\uff0c\u800c\u96c5\u864e YQL \u5c31\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u89e3\u51b3\u8fd9\u6837\u4e00\u4e2a\u95ee\u9898\u7684\u4e2d\u95f4\u5c42\uff0c\u8fd9\u5bf9\u4e8e\u5f00\u53d1\u4eba\u5458\u7279\u522b\u662f\u524d\u7aef\u5f00\u53d1\u4eba\u5458\u5c06\u610f\u4e49\u91cd\u5927\uff0c\u4e0b\u9762\u662f\u6765\u81ea\u963f\u91cc UED \u535a\u5ba2\u4e0a\u7684\u4e00\u4e2a\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n<pre lang=\"html4strict\" line=\"1\">\n<script>\nfunction loveData(r){\n\tvar results = r.query.results;\n\talert(results);\n}\n<\/script>\n<script src=\"http:\/\/query.yahooapis.com\/v1\/public\/yql?q=select * from flickr.photos.search&#038;format=json&#038;callback=loveData\"><\/script>\n<\/pre>\n<p>\u7531\u4e8e\u7bc7\u5e45\u6211\u9690\u6389\u4e86\u67e5\u8be2\u8bed\u53e5\u4e2d\u7684 where \u548c limit \u90e8\u5206\u4ee5\u5e2e\u52a9\u5927\u5bb6\u7b80\u5355\u7406\u89e3 YQL \u7684\u4e00\u79cd\u7528\u6cd5\uff0c\u5728\u65b0\u7248\u7684 YUI 3.2 \u4e2d\u5df2\u7ecf\u52a0\u5165\u4e86 YQL \u7684\u7ec4\u4ef6\u53ef\u4ee5\u901a\u8fc7 YUI().use(&#8216;yql&#8217;, function(){}); \u6765\u76f4\u63a5\u8fdb\u884c\u8c03\u7528\uff0c\u53ef\u4ee5\u770b\u5f97\u51fa\u6765\u4f7f\u7528\u8fd8\u662f\u975e\u5e38\u65b9\u4fbf\u7684\uff0c\u53e6\u5916\u4f60\u751a\u81f3\u53ef\u4ee5\u5411 YQL \u63d0\u4f9b\u4f60\u81ea\u5df1\u7684\u6570\u636e\u4ea7\u54c1\u4ee5\u62d3\u5c55 YQL \u7684\u80fd\u529b\uff0c\u4e00\u65e6\u88ab YQL \u63a5\u7eb3\uff0c\u90a3\u4e48\u4f60\u7684\u6570\u636e\u5c06\u4f1a\u4e3a\u5343\u4e07\u5f00\u53d1\u8005\u6240\u7528\u3002<\/p>\n<p>\u518d\u4e3e\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a\u6bd4\u5982\u6211\u60f3\u6293\u53d6\u67d0\u4e2a\u7f51\u9875\u7684\u4e3b\u8981\u5185\u5bb9\u90e8\u5206\uff0c\u5f88\u591a\u4eba\u4f1a\u91c7\u7528\u6b63\u5219\u6309\u7167\u7279\u5b9a\u7684\u89c4\u5219\u6765\u6458\u53d6\u9875\u9762\u7684 html \u4ee3\u7801\uff0c\u4f46\u6211\u662f\u4e2a\u6781\u5176\u559c\u6b22\u5077\u61d2\u7684\u4eba\uff0c\u6211\u5e0c\u671b\u76f4\u63a5\u6293\u51fa\u5176\u5728\u81ea\u5df1\u7684 feed \u91cc\u9762\u7684\u4e3b\u8981\u5185\u5bb9\uff0c\u901a\u5e38\u5728 feed content \u91cc\u7684\u5185\u5bb9\u90fd\u662f\u67d0\u4e2a\u9875\u9762\u7684\u4e3b\u8981\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre lang=\"sql\" line=\"1\">\nSELECT * FROM feed\nWHERE url IN (\n    SELECT href FROM html\n    WHERE url=\"http:\/\/nan.im\/blog\/1313\"\n    AND xpath=\"\/\/link[@type='application\/rss+xml']\" LIMIT 1\n)\nAND link = \"http:\/\/nan.im\/blog\/1313\"\n<\/pre>\n<p>\uff08<a href=\"http:\/\/y.ahoo.it\/If7ZJaYJ\">\u67e5\u770b\u8fd0\u884c\u7ed3\u679c<\/a>\uff09<\/p>\n<p>\u6211\u7528\u4e86\u4e00\u4e2a\u5b50 SELECT \u6765\u83b7\u53d6\u8fd9\u4e2a\u9875\u9762\u7684 feed \u5730\u5740\uff0c\u6709\u70b9\u7ed5\u6027\u80fd\u4e5f\u4e0d\u597d\u4f46\u65e0\u6240\u8c13\u4ea4\u7ed9 Yahoo! \u5904\u7406\u5c31\u597d\uff0c\u56e0\u4e3a\u5728 YQL FEED \u8868\u91cc url \u662f\u552f\u4e00\u7684\u5fc5\u9009\u53c2\u6570\uff0c\u6240\u4ee5\u6211\u5f97\u5148\u77e5\u9053\u5f53\u524d\u9875\u9762\u7684 feed \u5730\u5740\u662f\u4ec0\u9ebd\u7136\u540e\u518d\u7528\u5730\u5740\u53bb\u7b5b\u9009\u4e00\u4e0b\u83b7\u5f97\u9875\u9762\u7684 content \u8fd8\u662f\u76f8\u5f53\u65b9\u4fbf\u7684\uff01<\/p>\n<p>\u96c5\u864e YQL \u67e5\u8be2\u8bed\u8a00\u901a\u8fc7\u63d0\u4f9b\u7c7b SQL \u8bed\u6cd5\u6d88\u9664\u4e86\u5f00\u53d1\u4eba\u5458\u5b66\u4e60\u5927\u91cf API \u7684\u9ebb\u70e6\uff0c\u8282\u7ea6\u4e86\u5f00\u53d1\u65f6\u95f4\u548c\u5b66\u4e60\u6210\u672c\uff0c\u4f9d\u6258\u96c5\u864e YQL \u7684\u7a33\u5b9a\u548c\u9ad8\u6548\uff0c\u4f7f\u66f4\u591a\u7684\u5f00\u53d1\u8005\u62e5\u6709\u65e0\u6bd4\u5f3a\u5927\u7684\u6570\u636e\u83b7\u53d6\u53ca\u8ba1\u7b97\u80fd\u529b\uff0c\u8fd9\u5c06\u5e2e\u52a9\u6211\u4eec\u66f4\u65b9\u4fbf\u5feb\u6377\u9ad8\u6548\u7684\u521b\u9020\u66f4\u591a\u66f4\u597d\u7684\u4e92\u8054\u7f51\u4ea7\u54c1\u2026\u2026<\/p>\n<p>\u62d3\u5c55\u9605\u8bfb\uff1a<a href=\"http:\/\/www.aliued.cn\/?p=2728\">\u963f\u91cc UED \u5173\u4e8e YQL \u4ecb\u7ecd<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Yahoo! \u7684\u5f00\u53d1\u8005\u4eec\u603b\u80fd\u4e00\u6b21\u53c8\u4e00\u6b21\u7684\u5e26\u7ed9\u6211\u4eec\u60ca\u559c\uff0c\u8fd9\u6b21\u662f Yahoo! Query Language \u96c5\u864e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[20,24,47,117,96],"class_list":["post-1313","post","type-post","status-publish","format-standard","hentry","category-tech","tag-code","tag-develop","tag-js","tag-yahoo","tag-yql"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/posts\/1313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/comments?post=1313"}],"version-history":[{"count":0,"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/posts\/1313\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/media?parent=1313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/categories?post=1313"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.nan.im\/blog\/wp-json\/wp\/v2\/tags?post=1313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}