{"id":61575,"date":"2024-10-13T12:06:36","date_gmt":"2024-10-13T04:06:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61575\/"},"modified":"2024-10-13T12:06:36","modified_gmt":"2024-10-13T04:06:36","slug":"hive%e6%93%b4%e5%b1%95%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e4%b8%8d%e5%88%86%e5%8d%80%e4%b9%9f%e8%83%bd%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%9f%a5%e8%a9%a2-hive%e4%b8%8d%e5%88%86%e5%8d%80%e6%93%b4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61575\/","title":{"rendered":"Hive\u64f4\u5c55\u6578\u64da\u5eab\uff1a\u4e0d\u5206\u5340\u4e5f\u80fd\u5be6\u73fe\u9ad8\u6548\u67e5\u8a62 (hive\u4e0d\u5206\u5340\u64f4\u5c55\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 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Hive\u4f5c\u70ba\u4e00\u500b\u57fa\u65bcHadoop\u7684\u6578\u64da\u5009\u5eab\u5de5\u5177\uff0c\u63d0\u4f9b\u4e86SQL\u985e\u4f3c\u7684\u67e5\u8a62\u8a9e\u8a00\uff0c\u8b93\u7528\u6236\u80fd\u5920\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u5206\u6790\u3002\u7136\u800c\uff0c\u50b3\u7d71\u7684Hive\u6578\u64da\u5eab\u8a2d\u8a08\u901a\u5e38\u4f9d\u8cf4\u65bc\u5206\u5340\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u9019\u4e26\u4e0d\u662f\u552f\u4e00\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u4e0d\u5206\u5340\u7684\u60c5\u6cc1\u4e0b\uff0c\u5229\u7528Hive\u5be6\u73fe\u9ad8\u6548\u67e5\u8a62\u3002<\/p>\n<h2 id=\"hive%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-lxedymufOO\">Hive\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Hive\u662f\u4e00\u500b\u6578\u64da\u5009\u5eab\u57fa\u65bcHadoop\u7684\u7cfb\u7d71\uff0c\u4e3b\u8981\u7528\u65bc\u6578\u64da\u7684\u67e5\u8a62\u548c\u5206\u6790\u3002\u5b83\u5c07\u6578\u64da\u5b58\u5132\u5728HDFS\uff08Hadoop Distributed File System\uff09\u4e2d\uff0c\u4e26\u4f7f\u7528HiveQL\u8a9e\u8a00\u9032\u884c\u67e5\u8a62\u3002Hive\u7684\u8a2d\u8a08\u76ee\u7684\u662f\u70ba\u4e86\u8655\u7406\u5927\u898f\u6a21\u7684\u6578\u64da\u96c6\uff0c\u4e26\u63d0\u4f9b\u4e00\u500b\u7c21\u55ae\u7684\u63a5\u53e3\u4f86\u9032\u884c\u6578\u64da\u5206\u6790\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87%e4%b8%8d%e5%88%86%e5%8d%80%e7%9a%84%e8%a8%ad%e8%a8%88%ef%bc%9f-lxedymufOO\">\u70ba\u4ec0\u9ebc\u9078\u64c7\u4e0d\u5206\u5340\u7684\u8a2d\u8a08\uff1f<\/h2>\n<p>\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u5206\u5340\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u56e0\u70ba\u5b83\u5141\u8a31Hive\u5728\u67e5\u8a62\u6642\u53ea\u6383\u63cf\u76f8\u95dc\u7684\u6578\u64da\u3002\u7136\u800c\uff0c\u5206\u5340\u4e5f\u5e36\u4f86\u4e86\u4e00\u4e9b\u6311\u6230\uff0c\u4f8b\u5982\u7ba1\u7406\u8907\u96dc\u6027\u548c\u6027\u80fd\u74f6\u9838\u3002\u7576\u6578\u64da\u91cf\u975e\u5e38\u9f90\u5927\u6642\uff0c\u904e\u591a\u7684\u5206\u5340\u53ef\u80fd\u5c0e\u81f4\u5143\u6578\u64da\u7684\u7ba1\u7406\u8b8a\u5f97\u56f0\u96e3\uff0c\u4e26\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u9078\u64c7\u4e0d\u5206\u5340\u7684\u8a2d\u8a08\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u7ba1\u7406\uff0c\u4e26\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u9019\u7a2e\u8a2d\u8a08\u7279\u5225\u9069\u5408\u65bc\u6578\u64da\u91cf\u8f03\u5c0f\u6216\u67e5\u8a62\u6a21\u5f0f\u8f03\u70ba\u7a69\u5b9a\u7684\u5834\u666f\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%9f%a5%e8%a9%a2-lxedymufOO\">\u5982\u4f55\u5be6\u73fe\u9ad8\u6548\u67e5\u8a62<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%90%88%e9%81%a9%e7%9a%84%e6%96%87%e4%bb%b6%e6%a0%bc%e5%bc%8f-lxedymufOO\">1. \u4f7f\u7528\u5408\u9069\u7684\u6587\u4ef6\u683c\u5f0f<\/h3>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6587\u4ef6\u683c\u5f0f\u5c0d\u65bc\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002Parquet\u548cORC\u662f\u5169\u7a2e\u5e38\u7528\u7684\u5217\u5f0f\u5b58\u5132\u683c\u5f0f\uff0c\u5b83\u5011\u80fd\u5920\u6709\u6548\u5730\u58d3\u7e2e\u6578\u64da\u4e26\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u9019\u4e9b\u683c\u5f0f\u652f\u6301\u9ad8\u6548\u7684\u5217\u7be9\u9078\uff0c\u5f9e\u800c\u6e1b\u5c11\u4e86\u9700\u8981\u6383\u63cf\u7684\u6578\u64da\u91cf\u3002<\/p>\n<pre><code>CREATE TABLE example_table (\n    id INT,\n    name STRING,\n    age INT\n) STORED AS PARQUET;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-lxedymufOO\">2. \u4f7f\u7528\u7d22\u5f15<\/h3>\n<p>\u5728\u4e0d\u5206\u5340\u7684\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002Hive\u652f\u6301\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u5305\u62ec\u4f4d\u5716\u7d22\u5f15\u548c\u666e\u901a\u7d22\u5f15\u3002\u901a\u904e\u5275\u5efa\u7d22\u5f15\uff0cHive\u53ef\u4ee5\u66f4\u5feb\u5730\u5b9a\u4f4d\u5230\u6240\u9700\u7684\u6578\u64da\uff0c\u5f9e\u800c\u6e1b\u5c11\u67e5\u8a62\u6642\u9593\u3002<\/p>\n<pre><code>CREATE INDEX example_index ON TABLE example_table (name)\nAS 'org.apache.hadoop.hive.ql.index.compact.CompactIndexHandler'\nWITH DEFERRED REBUILD;<\/code><\/pre>\n<h3 id=\"3-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-lxedymufOO\">3. \u512a\u5316\u67e5\u8a62\u8a9e\u53e5<\/h3>\n<p>\u64b0\u5beb\u9ad8\u6548\u7684\u67e5\u8a62\u8a9e\u53e5\u662f\u63d0\u9ad8\u6027\u80fd\u7684\u53e6\u4e00\u500b\u95dc\u9375\u56e0\u7d20\u3002\u4f7f\u7528\u9069\u7576\u7684JOIN\u985e\u578b\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8a08\u7b97\u548c\u904e\u6ffe\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u4f8b\u5982\uff0c\u4f7f\u7528INNER JOIN\u800c\u4e0d\u662fOUTER JOIN\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u7684\u8655\u7406\u91cf\u3002<\/p>\n<pre><code>SELECT a.id, a.name\nFROM example_table a\nJOIN another_table b ON a.id = b.id\nWHERE a.age &gt; 30;<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-lxedymufOO\">\u7d50\u8ad6<\/h2>\n<p>\u96d6\u7136\u5206\u5340\u5728Hive\u4e2d\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6027\u80fd\u512a\u5316\u6280\u8853\uff0c\u4f46\u4e0d\u5206\u5340\u7684\u8a2d\u8a08\u540c\u6a23\u53ef\u4ee5\u5be6\u73fe\u9ad8\u6548\u67e5\u8a62\u3002\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u6587\u4ef6\u683c\u5f0f\u3001\u4f7f\u7528\u7d22\u5f15\u4ee5\u53ca\u512a\u5316\u67e5\u8a62\u8a9e\u53e5\uff0c\u4f01\u696d\u53ef\u4ee5\u5728\u4e0d\u5206\u5340\u7684\u60c5\u6cc1\u4e0b\uff0c\u4f9d\u7136\u7372\u5f97\u826f\u597d\u7684\u67e5\u8a62\u6027\u80fd\u3002\u9019\u5c0d\u65bc\u6578\u64da\u91cf\u8f03\u5c0f\u6216\u67e5\u8a62\u6a21\u5f0f\u7a69\u5b9a\u7684\u5834\u666f\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728Hive\u4e2d\u5be6\u73fe\u9ad8\u6548\u67e5\u8a62\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u5e0c\u671b\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Hive\u64f4\u5c55\u6578\u64da\u5eab\u7684\u9ad8\u6548\u67e5\u8a62\u6280\u8853\uff0c\u7121\u9700\u5206\u5340\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u5927\u6578\u64da\u5206\u6790\u6d41\u7a0b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61575","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61575","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61575"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61575\/revisions"}],"predecessor-version":[{"id":61576,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61575\/revisions\/61576"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61575"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}