{"id":160091,"date":"2024-11-03T20:12:20","date_gmt":"2024-11-03T12:12:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160091\/"},"modified":"2024-11-03T20:12:21","modified_gmt":"2024-11-03T12:12:21","slug":"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-create-index","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160091\/","title":{"rendered":"OceanBase \u6559\u7a0b\uff1aOceanBase CREATE INDEX"},"content":{"rendered":"<h1 id=\"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-create-index-IiUANtnVUe\">OceanBase \u6559\u7a0b\uff1aOceanBase CREATE INDEX<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u7684\u4f7f\u7528\u5c0d\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002OceanBase \u4f5c\u70ba\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u5206\u4f48\u5f0f\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u7d22\u5f15\u529f\u80fd\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u9ad8\u6548\u5730\u6aa2\u7d22\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e OceanBase \u4e2d\u7684 CREATE INDEX \u8a9e\u53e5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%a2%e5%bc%95%ef%bc%9f-IiUANtnVUe\">\u4ec0\u9ebc\u662f\u7d22\u5f15\uff1f<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u80fd\u5920\u5e6b\u52a9\u6578\u64da\u5eab\u5feb\u901f\u5b9a\u4f4d\u5230\u6240\u9700\u7684\u6578\u64da\u884c\u3002\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/p>\n<h2 id=\"oceanbase-%e4%b8%ad%e7%9a%84%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-IiUANtnVUe\">OceanBase \u4e2d\u7684\u7d22\u5f15\u985e\u578b<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0c\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\u7d22\u5f15\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\u7d22\u5f15\uff1a<\/strong>\u81ea\u52d5\u5275\u5efa\uff0c\u78ba\u4fdd\u6bcf\u884c\u6578\u64da\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li><strong>\u552f\u4e00\u7d22\u5f15\uff1a<\/strong>\u78ba\u4fdd\u7d22\u5f15\u5217\u7684\u503c\u552f\u4e00\uff0c\u9632\u6b62\u91cd\u8907\u6578\u64da\u3002<\/li>\n<li><strong>\u666e\u901a\u7d22\u5f15\uff1a<\/strong>\u52a0\u901f\u67e5\u8a62\uff0c\u4f46\u4e0d\u4fdd\u8b49\u552f\u4e00\u6027\u3002<\/li>\n<li><strong>\u5168\u6587\u7d22\u5f15\uff1a<\/strong>\u7528\u65bc\u5c0d\u6587\u672c\u6578\u64da\u9032\u884c\u5168\u6587\u6aa2\u7d22\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8-create-index-%e5%89%b5%e5%bb%ba%e7%b4%a2%e5%bc%95-IiUANtnVUe\">\u4f7f\u7528 CREATE INDEX \u5275\u5efa\u7d22\u5f15<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0c\u4f7f\u7528 CREATE INDEX \u8a9e\u53e5\u4f86\u5275\u5efa\u7d22\u5f15\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE INDEX index_name ON table_name (column1, column2, ...);<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5177\u9ad4\u7684\u793a\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u4e26\u5e0c\u671b\u5728 <code>last_name<\/code> \u5217\u4e0a\u5275\u5efa\u4e00\u500b\u7d22\u5f15\uff1a<\/p>\n<pre><code>CREATE INDEX idx_last_name ON employees (last_name);<\/code><\/pre>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-IiUANtnVUe\">\u7d22\u5f15\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u5275\u5efa\u7d22\u5f15\u6642\uff0c\u61c9\u8003\u616e\u4ee5\u4e0b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u5217\uff1a<\/strong>\u7d22\u5f15\u61c9\u8a72\u91dd\u5c0d\u7d93\u5e38\u7528\u65bc\u67e5\u8a62\u7684\u5217\uff0c\u7279\u5225\u662f WHERE \u5b50\u53e5\u4e2d\u7684\u5217\u3002<\/li>\n<li><strong>\u907f\u514d\u904e\u591a\u7d22\u5f15\uff1a<\/strong>\u96d6\u7136\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u6578\u64da\u7684\u63d2\u5165\u548c\u66f4\u65b0\u6027\u80fd\u3002<\/li>\n<li><strong>\u5b9a\u671f\u7dad\u8b77\u7d22\u5f15\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u7684\u8b8a\u5316\uff0c\u5b9a\u671f\u6aa2\u67e5\u548c\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u4fdd\u6301\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%88%aa%e9%99%a4%e7%b4%a2%e5%bc%95-IiUANtnVUe\">\u522a\u9664\u7d22\u5f15<\/h2>\n<p>\u5982\u679c\u4e0d\u518d\u9700\u8981\u67d0\u500b\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528 DROP INDEX \u8a9e\u53e5\u522a\u9664\u5b83\u3002\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DROP INDEX index_name ON table_name;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u522a\u9664\u4e4b\u524d\u5275\u5efa\u7684 <code>idx_last_name<\/code> \u7d22\u5f15\uff1a<\/p>\n<pre><code>DROP INDEX idx_last_name ON employees;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IiUANtnVUe\">\u7e3d\u7d50<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0c\u4f7f\u7528 CREATE INDEX \u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u5275\u5efa\u7d22\u5f15\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u9078\u64c7\u5408\u9069\u7684\u5217\u4e26\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5145\u5206\u767c\u63ee\u7d22\u5f15\u7684\u512a\u52e2\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u5408\u7406\u4f7f\u7528\u7d22\u5f15\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6216\u5176\u4ed6\u6578\u64da\u5eab\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to create indexes in OceanBase with this comprehensive tutorial, enhancing database performance and query efficiency.<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-160091","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160091","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=160091"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160091\/revisions"}],"predecessor-version":[{"id":160092,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160091\/revisions\/160092"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160091"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160091"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}