{"id":160667,"date":"2024-11-04T00:00:23","date_gmt":"2024-11-03T16:00:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160667\/"},"modified":"2024-11-04T00:00:24","modified_gmt":"2024-11-03T16:00:24","slug":"postgresql%e6%95%99%e7%a8%8bpostgresql-%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160667\/","title":{"rendered":"POSTGRESQL\u6559\u7a0bPostgreSQL \u7d22\u5f15"},"content":{"rendered":"<h1 id=\"postgresql%e6%95%99%e7%a8%8b%ef%bc%9apostgresql%e7%b4%a2%e5%bc%95-VogvTuXMXv\">PostgreSQL\u6559\u7a0b\uff1aPostgreSQL\u7d22\u5f15<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002PostgreSQL\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u5e6b\u52a9\u7528\u6236\u512a\u5316\u6578\u64da\u6aa2\u7d22\u7684\u901f\u5ea6\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0ePostgreSQL\u7684\u7d22\u5f15\uff0c\u5305\u62ec\u5176\u985e\u578b\u3001\u4f7f\u7528\u65b9\u6cd5\u53ca\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-VogvTuXMXv\">\u4ec0\u9ebc\u662f\u7d22\u5f15\uff1f<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u52a0\u901f\u67e5\u8a62\u64cd\u4f5c\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u5728PostgreSQL\u4e2d\uff0c\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=\"postgresql%e4%b8%ad%e7%9a%84%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-VogvTuXMXv\">PostgreSQL\u4e2d\u7684\u7d22\u5f15\u985e\u578b<\/h2>\n<p>PostgreSQL\u652f\u6301\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u6bcf\u7a2e\u7d22\u5f15\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u512a\u52e2\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u7d22\u5f15\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>B-tree\u7d22\u5f15<\/strong>\uff1a\u9019\u662fPostgreSQL\u7684\u9ed8\u8a8d\u7d22\u5f15\u985e\u578b\uff0c\u9069\u7528\u65bc\u5927\u591a\u6578\u67e5\u8a62\u3002\u5b83\u652f\u6301\u7b49\u503c\u67e5\u8a62\u548c\u7bc4\u570d\u67e5\u8a62\uff0c\u4e26\u4e14\u5728\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u4e2d\u8868\u73fe\u826f\u597d\u3002<\/li>\n<li><strong>Hash\u7d22\u5f15<\/strong>\uff1a\u5c08\u9580\u7528\u65bc\u7b49\u503c\u67e5\u8a62\uff0c\u5c0d\u65bc\u7bc4\u570d\u67e5\u8a62\u5247\u4e0d\u9069\u7528\u3002Hash\u7d22\u5f15\u7684\u67e5\u8a62\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u4e0d\u5982B-tree\u7d22\u5f15\u9748\u6d3b\u3002<\/li>\n<li><strong>GIN\u7d22\u5f15<\/strong>\uff1a\u5168\u540d\u70ba\u201cGeneralized Inverted Index\u201d\uff0c\u9069\u5408\u7528\u65bc\u5305\u542b\u591a\u500b\u503c\u7684\u6578\u64da\u985e\u578b\uff0c\u5982\u9663\u5217\u548cJSONB\u3002GIN\u7d22\u5f15\u5728\u8655\u7406\u5305\u542b\u591a\u500b\u5143\u7d20\u7684\u67e5\u8a62\u6642\u975e\u5e38\u9ad8\u6548\u3002<\/li>\n<li><strong>GiST\u7d22\u5f15<\/strong>\uff1a\u5168\u540d\u70ba\u201cGeneralized Search Tree\u201d\uff0c\u9069\u5408\u7528\u65bc\u7a7a\u9593\u6578\u64da\u548c\u5176\u4ed6\u8907\u96dc\u6578\u64da\u985e\u578b\u3002GiST\u7d22\u5f15\u652f\u6301\u7bc4\u570d\u67e5\u8a62\u548c\u76f8\u4f3c\u6027\u67e5\u8a62\u3002<\/li>\n<li><strong>SP-GiST\u7d22\u5f15<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u7279\u6b8a\u7684GiST\u7d22\u5f15\uff0c\u9069\u5408\u7528\u65bc\u67d0\u4e9b\u7279\u5b9a\u7684\u6578\u64da\u985e\u578b\uff0c\u5982\u5730\u7406\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e7%b4%a2%e5%bc%95-VogvTuXMXv\">\u5982\u4f55\u5275\u5efa\u7d22\u5f15<\/h2>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u5275\u5efa\u7d22\u5f15\u7684\u8a9e\u6cd5\u76f8\u5c0d\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efaB-tree\u7d22\u5f15\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_example ON table_name (column_name);<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u5728\u6307\u5b9a\u7684\u8868\u548c\u5217\u4e0a\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cidx_example\u201d\u7684\u7d22\u5f15\u3002\u5c0d\u65bc\u5176\u4ed6\u985e\u578b\u7684\u7d22\u5f15\uff0c\u8a9e\u6cd5\u4e5f\u985e\u4f3c\uff0c\u53ea\u9700\u5728CREATE INDEX\u8a9e\u53e5\u4e2d\u6307\u5b9a\u7d22\u5f15\u985e\u578b\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u5275\u5efa\u4e00\u500bGIN\u7d22\u5f15\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_example_gin ON table_name USING GIN (column_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-VogvTuXMXv\">\u7d22\u5f15\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u96d6\u7136\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u4e0d\u7576\u4f7f\u7528\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u9078\u64c7\u6027\u9ad8\u7684\u5217<\/strong>\uff1a\u5728\u9078\u64c7\u7d22\u5f15\u5217\u6642\uff0c\u61c9\u9078\u64c7\u9078\u64c7\u6027\u9ad8\u7684\u5217\uff0c\u5373\u80fd\u5920\u6709\u6548\u5340\u5206\u4e0d\u540c\u8a18\u9304\u7684\u5217\u3002<\/li>\n<li><strong>\u907f\u514d\u904e\u591a\u7d22\u5f15<\/strong>\uff1a\u6bcf\u500b\u7d22\u5f15\u90fd\u6703\u4f54\u7528\u984d\u5916\u7684\u5b58\u5132\u7a7a\u9593\uff0c\u4e26\u4e14\u5728\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u6642\u6703\u589e\u52a0\u958b\u92b7\u3002\u56e0\u6b64\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u5408\u7406\u8a2d\u7f6e\u7d22\u5f15\u3002<\/li>\n<li><strong>\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15<\/strong>\uff1a\u96a8\u8457\u6578\u64da\u7684\u8b8a\u5316\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u4fdd\u6301\u5176\u6027\u80fd\u3002<\/li>\n<li><strong>\u4f7f\u7528EXPLAIN\u5206\u6790\u67e5\u8a62<\/strong>\uff1a\u4f7f\u7528EXPLAIN\u547d\u4ee4\u53ef\u4ee5\u5e6b\u52a9\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u5f9e\u800c\u4e86\u89e3\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VogvTuXMXv\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL\u7684\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u91cd\u8981\u5de5\u5177\u3002\u901a\u904e\u5408\u7406\u9078\u64c7\u7d22\u5f15\u985e\u578b\u548c\u8a2d\u7f6e\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u7684\u6548\u7387\u3002\u7121\u8ad6\u662f\u4f7f\u7528B-tree\u3001GIN\u9084\u662fGiST\u7d22\u5f15\uff0c\u4e86\u89e3\u5176\u7279\u6027\u548c\u6700\u4f73\u5be6\u8e10\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684PostgreSQL\u6578\u64da\u5eab\uff0c\u4eab\u53d7\u66f4\u5feb\u7684\u6578\u64da\u8655\u7406\u901f\u5ea6\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b66\u4e60PostgreSQL\u7d22\u5f15\u7684\u6559\u7a0b\uff0c\u638c\u63e1\u5982\u4f55\u521b\u5efa\u548c\u4f18\u5316\u7d22\u5f15\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u67e5\u8be2\u6027\u80fd\uff0c\u63d0\u5347\u6570\u636e\u5904\u7406\u6548\u7387\u3002<\/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-160667","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160667","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=160667"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160667\/revisions"}],"predecessor-version":[{"id":160668,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160667\/revisions\/160668"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}